181: Why Mastering Vapor Pressure Control Holds the Key to Exceptional Crop Quality with David Sandelman
Ever wonder why your plants aren’t thriving—or why your post-harvest yields and terpene profiles just don’t stack up? I’ve been there, and this episode is your shortcut out of the guesswork.
This week, I’m joined by David Sandelman, COO of Cannatrol, inventor, and expert in environmental controls with decades of pioneering innovation under his belt. From the origins of digital thermostats to revolutionizing post-harvest processing in cheese, charcuterie, and cannabis, David Sandelman brings deep scientific insight and a passion for precision.
We dive into the real science behind environmental control—why traditional approaches to humidity just don’t cut it, and how understanding vapor pressure is the key to stable, high-quality crops across cheese, cannabis, and even hops. David Sandelman explains, in plain terms, how “water activity” trumps “percent moisture” for true shelf stability and consistent results.
You’ll also hear about the future of indoor farming, from AI-optimized grow rooms to what legacy cultivators can learn from the world of cheese and charcuterie. Plus, we dig into practical applications—whether you’re a large-scale producer or a passionate home grower—along with candid insights from David Sandelman’s journey in the industry.
Ready to get clarity and control over your crops while boosting quality and yield? Hit play and discover the system that’s changing the game for post-harvest and indoor growers everywhere.
Thanks to Our Sponsors
CEA Summit East - https://indoor.ag/cea-summit-east-2025/
Indoor AgCon - https://indoor.ag/
Key Takeaways
00:00 From Vermont Restaurants to Post-Harvest Technology
00:06:10 The Science of Controls and Humidity Explained
00:12:01 Cannabis Flower, Water Activity, and Drying Innovation
00:18:00 Trichomes, Terpenes, and Preserving Quality
00:23:32 Consistency, Yield, and the Future of Quality Cannabis
00:29:32 Expanding Applications: Hops, Tea, and Industry Insights
00:34:35 Embracing Change and Applying Proven Science
Tweetable Quotes
"That's when we built a prototype and we purchased a wine cooler and stripped it out, just used the insulated box with the door and put a couple of thousand dollars worth of controls on it, gave it to a grower and said, put some flour in there and tell us what happens. Is it going to destroy it? Does nothing? And sure enough, two weeks later, he's like, I don't know what this box is, but this is some of the finest flower I've ever produced. He's, like, hanging on to it. I'm not going to give it back. And that's when we knew we were onto something."
"We are a process system that's designed for the process of getting your proper product to the right water activity for shelf stability versus applying conventional comfort cooling equipment to accomplish it."
"We like to say it's sous vide for weed."
Resources Mentioned
Website - https://cannatrols.com/
LinkedIn - https://www.linkedin.com/in/david-sandelman-74323216/
Youtube - https://www.youtube.com/@cannatrolsolutions
Instagram - https://www.instagram.com/cannatrol/
Facebook - https://www.facebook.com/cannatrol/
Twitter - https://x.com/Cannatrols
Connect With Us
VFP LinkedIn - https://www.linkedin.com/company/verticalfarmingpodcast
VFP Twitter - https://twitter.com/VerticalFarmPod
VFP Instagram - https://www.instagram.com/direct/inbox/
VFP Facebook - https://www.facebook.com/VerticalFarmPod
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So, David Sandelman, CEO of Canachold, thank you so much for joining me on the
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Berkeley Farming podcast. Thank you. Great being with you. Good to
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see you again. Yeah, likewise. So, for the benefit of the the viewers and
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the listener, where's home for you? We're here in Vermont, but we also
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have an office in Denver. So thanks to
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the outreach from your PR team, we got to connect at Indoor
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adcon. So I'm wondering how the rest of the conference went for you
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and if there was any insights or how much value you got from being there
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on the ground. Indoor ag was great because what we are
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exposed to other people that have different products
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in post harvest, and so they're like, ah, we can use
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this technology. And we've also been, you know, playing with the
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idea of getting more involved using our technology to maintain
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proper VPD vapor pressure deficit in grow.
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But, you know, our main emphasis was on post harvest
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of various different products. And every day we're learning that there's new
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and exciting things. We just did a trial with someone trying
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saffron. Okay. Someone's been doing testing, and we
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even use it at home for our own herbs that we grow
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for storage is great. We did a facility
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in Hawaii that does seaweed. Yeah, we'll get into all of those
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specifics because I remember you taking us through that. What I want to do
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is wind the clock back a little bit because your story doesn't actually begin
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in cannabis, it begins in a restaurant. So, yeah, take us back.
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You know, what were you doing all those years ago and what was the problem
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that you stumbled into? Yeah, so being here in Vermont
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caught. My wife and I are corporate refugees, left the big city,
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came up to Vermont, wound up in a inn and restaurant.
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And our mission was buying local. So 20 something years ago,
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we were at the cutting edge of farm to table, and
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we worked with a lot of local cheesemakers. And it was
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there that we learned that the cheesemakers were struggling
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with their aging rooms and digging into it and trying
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to understand what the issues were. It was like, well,
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yeah, cheese is very regional, its climate and
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geology specific. The herds, what
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they're feeding, all of that. And now people were here
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in Vermont trying to make any kind of cheese any time of the
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year. And it's like, wait, you know, you used to make cheddar and Cheddar
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England, and you made Romano and Emilio Romano, and
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you're trying to make this cheese in Vermont. And what was unique, it
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was those cheese were made and then
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stored in caves in the area, which was Cool. And that's where they
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did the aging. You can't dig a cave in Vermont. I think it's
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granite. It's solid. You go down a couple of feet, and that's it. You hit
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rock. You hit rock bottom. And so then it was getting to you. What's
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unique about a cave? Yeah. And then it became,
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oh, it's all about consistent, very consistent
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conditions. And, you know, people speak about
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humidity, and it's like, well, humidity is really made up of
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what's the temperature in the cave and what's the moisture content in the
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cave. And those two are extremely stable.
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So that became. Okay, how do we create an
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environment with very stable temperature and very stable
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vapor pressure. Dew point. And that's what led to the
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development of vape patrol. And so we built a couple of
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cheese facilities here, you know, retrofit their rooms. And
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they had great success. And word spread. And we were working
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with someone who was a consultant in the cheese industry. And then he took
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the technology and. And deployed it in all over
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US And Canada. And cheesemakers all over were
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winning ribbons at the cheese competition that
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had our technology. They also would come back to us and say, you know, I
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can sleep at night. I don't have to go out there and check on my
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cheese and make sure I don't have a problem. And so that's how it all
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began. From there, I went to Charcuterie. I'm curious about
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the cheese. What was it about your background that helped you understand
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the specificity of these environments that maybe other people were missing? So my
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background was and has been controls. I have many
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patents, and the very first patent I got was late 70s, early
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80s, during the first energy crisis. A digital clock
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thermostat. It was the first digital clock thermostat.
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It's the whole category today. You go into a Home Depot and there's a whole
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section of digital clock thermostats. But we're
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was developed was the first digital clock thermostat. And what was
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unique at the time is most homes at that
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time had what we call a hockey puck around thermostat on the wall.
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You turned it up and down, and it only had two wires. And so
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the challenge was, how do you run a clock and how do you have the
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thermostat turn the heat on and off? Yeah. So we're able to
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do both sending power to the thermostat and sending
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the signal from the thermostat to the heat. That's what was unique. And it was
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the first digital clock Thermostat. So my background's always been in
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various types of controls. You talk a lot. And I want to make sure
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if we get too in the technical weed, that we can bring it and simplify
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it for folks, because there's a lot of things we're talking about here that are
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important, and especially for indoor farming. You talk a lot about stability
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versus just temperature. Can you explain that difference in simple
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terms? Sure. So a lot of people are
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trying to control the relative humidity in
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a space, whether it's post harvest or
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even in a grow room. And the challenge is
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relative humidity is not a controllable
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variable. It is made up of two components.
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What's the temperature of the air? And what's the amount of
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moisture in the air, which is measured in either
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vapor pressure or dew point. If you know dew point, you
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know vapor pressure. If you know vapor pressure, you know dewpoint. But those
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are the two variables that make up what relative
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humidity is. So if you change the temperature,
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the relative humidity changes. If you change the amount of
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moisture in the air, the relative humidity changes.
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So controlling relative humidity directly
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really doesn't exist as mathematical or science.
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And best example I like to use is a bank loan.
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All right? You get a monthly payment, and if you want to increase
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or decrease your monthly payment, there's no dial
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to turn up and down your monthly payment. You got to change the
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terminal loan, the interested loan, or the principal of the
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loan. Change any one of those three, and your monthly payment changes. But there's
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no such thing as a dial to dial up and dial down your monthly
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payment. Relative humidity is. Is the same thing. So
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while people. Oh, I'm trying to control the relative
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humidity. Well, it's nearly impossible
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because one of two variables change. And then what happens is
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they use equipment like air conditioners. And an air
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conditioner, when you turn it on, does two things. It cools the
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air and dries the air. And so
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both of the components that make relative humidity are shifting
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or they introduce dehumidifiers.
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Well, a dehumidifier removes moisture from the air,
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so it's lowering the vapor pressure, dew point, but at the same time, it's
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raising the temperature of the air. So there's this conflict.
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And very often if you've got a room that you have air conditioners
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and dehumidifiers, the dehumidifier comes
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on to remove moisture from the air. And while it's doing that,
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yeah, it's removing moisture, but it's also warming the air.
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So they're in competition with each other. Yeah. Now the air conditioner goes, hey, wait,
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it's starting to get warm in here. I'm going to come on to cool the
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air. But guess what? It's also removing moisture. And then the relative.
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The dehumidifier is like, wait, the air is getting dry
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or then I want it, I'm going to turn off. And so you wind
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up in this crazy dance of the air conditioners,
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the dehumidifiers. Now, what you might see is a
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fairly stable relative humidity. And people are
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claiming success. But what's really happening in the space is
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the vapor pressure is going up and down as these pieces of equipment
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are cycling on and off, because the temperature is doing things
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simultaneously, which sort of caused a flat line
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of relative humidity. But what we learned
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is plants, they don't care about the relative
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humidity. They're interested in the two components, what's the
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temperature and what's the vapor pressure? Because in
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growing, people talk about vpd, the
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vapor pressure difference, and that is the difference of the
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vapor pressure at the leaf surface and the vapor pressure
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in the room when they're close, the water, the
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vapor that's coming out of the stomata or the leaf is not
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drawn away fast enough because the vapor difference is
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too close. And so things can get moist under a
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leaf. And that's where stock adding mold.
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Yeah, Critters and things you don't want because it's a nice moist area
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on the other side. And when you have all those systems clocking
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on and off, it's obviously a lot of expenditure and energy as well, so.
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Absolutely, because they're counteracting each other on the other side. If your
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vapor pressure difference is too great. Now what happens is
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the plant is losing moisture quickly, so it starts
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bringing up moisture up through the roots at a faster rate. Well,
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that means it's bringing up the nutrients at a faster rate. And now
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you can wind up overfeeding, poisoning the plant with too
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much nutrients. Yeah, that's a good point. And so if your vapor
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pressure in the room is doing this, the poor plant is like,
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whoa, which way do you want me to go? And they're looking at, oh, but
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we're holding a flat relative humidity. That's a good explanation.
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Thank you for that. So you solved it for cheese and you were about to
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mention how that turned into charcuterie and dry aged steak. Yeah.
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So, you know, what it came down to is holding a constant vapor
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pressure in the space to remove the free available
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water. And with shelf stable products, they're looking for a point,
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0.6 water activity. At a 0.6 water activity,
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molds and microbes can't grow. And it's a unit of measure that
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expresses how much water is bound and
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unbound in the product. Okay. And it is the
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unbound water that things grow on
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and feed on the mole, the microbes. And once you get to
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a point six water activity, there no longer is
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enough unbound water for them to survive. And that's how you, how
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would you define unbound water? That. The concept of that, that is
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water that's not bound up in cellular structure. Okay. It's
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free, available. Okay. So it's just there for other things to
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grab onto and feed. Once you get rid of that, yeah, it's still
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in the product, but the microbes and mold
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can't get to it to feed. And then you have a shelf stable product.
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So take cheese or charcuterie, the same thing. You
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know what they're after is they want, those are about shelf stable
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products. And then you get usda, fda,
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they want to know what the water activity of that product is so they know
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when the consumer gets it, it's going to be shelf stable. And not
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when you cut into that salami, it's rancid in the middle because there
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was still unbound water for microbes to grow on. They use
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other salts and other things to help the process for
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shelf stability. But being involved in the food
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industry and learning about water activity,
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bound and unbound water, it was like, wait a second.
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Cannabis flower? Yeah. Why are they trying the
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cannabis flower? Well, you can't smoke it
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when it's freshly picked. It's too wet, it won't burn. And if
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you try and store it, it's going to go moldy. So
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people dry it. But now we've learned
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about the science of shelf stability and what's really
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going on. So that's when we said, hey, let's apply
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this technology, the vapor troll technology, which we
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called it, to a cannabis flower and see what happens. Our first
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challenge was no one was going to give us a giant room,
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a flower to play with, you know, because we were. Everything we did was on
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a large scale for sure. Cheese makers, charcuterie makers. It's
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big, big rooms with thousands and thousands of pounds of
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product in there that's drying. So we realized no
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one's going to give us that much flour to play with, nor did we knew
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what the outcome was. So that's when we built a prototype and we
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purchased a wine cooler and stripped it out, just used the
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insulated box with the door and put a couple of thousand dollars worth
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of controls on it, Gave it to a grower and said, put some
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flour in there and tell us what happens. Is it going to destroy?
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It does nothing. And sure enough, two weeks later, he's like,
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I don't know what this box is, but this is some of the finest flour
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I've ever produced. He's, like, hanging on to it. I'm not going to give it
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back. And that's when we knew we were onto something. How long did
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that process take for him to see that result? It was like a week or
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two, because you get, you know, smokable flower in about eight days.
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Okay, but interesting. You know, we've always said, oh, about eight days.
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But as now there's more and more of this technology
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out there, more and more people are using it. We're starting to learn a
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lot of interesting things because now there's a reference standard.
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You can. It's repeatable and consistent.
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So now you can do experiments because at
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least you know, the dry cure is always going to be the same.
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Okay. And so what's come out of this is now
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people are starting to see that different
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cultivars need different amounts of time
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until they're optimum and they're at their peak. So
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early on, we said, yeah, four days will get you to your point. Six water
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activity. And you like to see another four days before you got nice
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smokeable product. But once we started getting to
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a broad global audience, people, well, you
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ruined my flower. I had it in the eight days. It's terrible.
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And then we started learning, oh, that cultivar might need 30
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days. Now all of a sudden, we're like, oh, you know what? We're not much
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different than the wine industry. Then the cheese industry
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and Bridget, you know. Yeah, this. You pay
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a premium for longer age, Bridget. Yeah. Than young
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prosciutto. Yeah. And a wine. The fine. You know, certain
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wines age better over time. Not all.
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Guess what? Cultivar specific. Now people are starting
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to learn. The same thing applies to cannabis. It's an
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agricultural product. And cultivar to cultivars. Different take
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different time. You also mentioned trichomes. Can you explain what those are
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and why preserving them is so critical? Well, you know, just
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like you grow a vineyard and you have your
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grapes and you squeeze, you know, you're going after the
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juice in the grape. And a cannabis plant,
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the trichome is where the THC and
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CBDs and terpenes and all of those are
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produced. They these little bulbous Glands,
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they're on the ends of stalks. A lot of people have seen trichome
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pictures. Pretty much all plants have trichomes.
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Even a lemon zest, you know, you're breaking into the outer
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trichomes. And the trichomes and plants are a
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defense mechanism in multiple ways. Different fronts, different
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plants. But part of it is the terpenes are good
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because they smell. And certain predators, bugs,
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whatever, might not like that smell. And so when the little
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trichome heads burst, the little exploding bombs,
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the predator who touches it goes, this is nasty. And leaves
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also, it's sticky and they might get trapped there and
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they're done. So they're also on. The cannabis plant
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are known to protect the plant from UV light.
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It's sort of like a whole forest of little sunscreen
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things there. But what do we grow the plant for? We want to
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harvest what's in the trichome heads, whether we smoke
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it, whether we press it, whether we extract it.
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But that's where it is now, what we're learning.
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So it started with we did that first unit and it was like,
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wow, this is some of the best flower I've ever produced. And then did another
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and another and everyone kept coming back. This is amazing. The flower
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smokes amazing. It's, it's not over dry, it's
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consistent, it tastes great. So the first thing we did is
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we went out and did some side by side analytics and
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saw that at terpenes were much higher than
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the way people were conventionally trying and curing using
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air conditioners, dehumidifiers, hanging in a barn, hanging in the
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basement, whatever. Yeah, we were consistently higher in terpenes, which is also
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a bonus. Yeah, yeah. For cannabis. So then
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we're like, why? And so then we started doing the research
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on the whys and it took quite a bit of time.
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But ultimately what we learned is when you try
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with conventional methods, the little trichome heads,
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which are called the cuticles, ruptured. And that was where
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the loss of the terpenes and everything was going.
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And we did it two different ways. The researchers one
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first stumbled upon this by doing grid counts under a microscope
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using vapor troll technology for drying flower
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compared to conventional like 60, 60 method of drying. And
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they like, wow, 25 to 30% of the trichome
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heads are ruptured conventional. And only 1 to 2% of them
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are ruptured using the vapor troll technology.
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Then they re approached it using chroma photography,
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knowing that ruptured trichomes change in color. And
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that backed up what the grid counts were. Okay, so now we
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knew we have higher terpene retention because
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of the non rupturing of the trichome heads.
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Now that raises the next question,
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the next why? Yeah. Okay. And
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what we don't know yet is whether the trichome
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heads are rupturing because in conventional
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systems the vapor pressure is fluctuating
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up and down. And is that causing the trichome head
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to flex? Every time the vapor pressure goes down around
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it, it expands the vapor pressure around that goes up, it
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contracts. And is that fluctuating vapor
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pressure causing stress fractures? Because it's
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only two cell walls thick to break, or
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we're maintaining a constant stable vapor pressure.
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Is it allowing the cuticle, those two cell walls to
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either harden or ripen? We really don't know. Or a
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combination of both. And you're able to do the measurement
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of tracking or maybe not yet of the vapor pressure as it
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fluctuates? Oh, yeah. At the same time, while you're, you're
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looking at the, at the cell walls that we haven't gotten to. Okay, all
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right. Okay. We haven't. This is only the results.
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Yeah. That it's subject to fluctuation or
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constant over a period of days. So you're still doing. So further
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testing is every day we're gutting
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further and further into us. In the past in Legacy,
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there was dry was a step
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then cure and. Well, why? Well, because
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if you put it in a barn, if you put it in a room
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with air conditioning or dehumidifiers, it's constantly
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going to dry. The water is going to keep leaving it and
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you're going to wind up with overdrive dust. So
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at some point you got to make the call and say
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it's dry enough and move it into
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some sealed containers to arrest the drying process.
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And up until now that has been a touchy
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feely, you know, snap the stems.
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When do I. Because if you don't go by instinct. Yeah. You're
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gonna over dry it. So you gotta then put it in jars or
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totes or bags. Yeah, turkey bags. So the curing
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is essentially halting the drying process. You're
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removing it from the drying area to stop the drying process. Yeah.
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But then what's happening there? Well, people would move
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out of the drying space and if they took it out too soon
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or if the big Kohlers still had
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unbound water in it where the smaller didn't and they
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put it in a sealed vessel, well, they might get mold
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because they haven't dried it sufficiently. So what do they. Do
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they burp? They open the jar to let out that
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extra moisture. But I ask them, yeah, but in
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Florida, in August, you open the jar, which way is
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the water going? Added a jar into the jar, versus
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Minnesota in January, where the air is
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so bone dry, that flower might be perfectly dried. You're going to open the jar
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and whatever moisture you have left in there, you're going to let out and then
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seal it and the flower is going to further dry. I'm in Minnesota, so I
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can vouch for that. Exactly. But what we're doing by
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holding the vapor pressure constant, there's no
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ending the drying process. The flour comes to
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equilibrium with the vapor pressure in the space and just stays
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there. So you no longer have to move it. Okay. You don't have to.
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And so now drying is a
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continuum. Right. Into cure and
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store. Yeah. You eliminate that labor, you
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eliminate the guesswork. We like to say it's sous vide
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for weed. Oh, anyone in the restaurant industry would
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know about the sous vide. Right. Because it doesn't matter if you got a little
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steak or a big steak, you put them into the tank of water at your
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finished temperature, they both get there and are in equilibrium.
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And you can leave them there. They don't get overcooked. We're doing the same thing
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with vapor pressure with a flour. That's great.
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So what was interesting is that I imagine this results in higher
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yield, better quality, longer shelf life. Like all of the above. All of the
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above. A reduction in labor, and then that all turns
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into, well, okay, higher yield. That interests people.
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Because we'll go into a facility and measure their current flower that they're
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shipping and seeing they're drying it to maybe a 0.5 water
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activity instead of 0.6, and they're walking away
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5 to 7% of their top line revenue by
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overdrying. And a lot of them are doing that because they're
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concerned about mold. So they're willing to sacrifice
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all that revenue knowingly or unknowingly?
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Yeah. So when you're having these conversations and you're heading into
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these meeting with these, these farmers and these growers, is
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it like a light bulb moment for them? What's the real world impact that it's
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having? What's interesting is to see the nodding heads
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as you explain the challenges of pulling it out of the
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dryer room and someone goes in there on Friday and goes,
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wow, you know, if we leave it till Monday, it's going to be overdrive.
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But we can't pull it now. Do we bring people in over the weekend? Do
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we leave it? You know, and then all of a sudden it's like, that's no
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longer a discussion, it's no longer an issue. Just leave it there till Thursday,
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Friday, whenever. If you follow the sous vide example,
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higher yield. Yeah. That drops right to the bottom line. You
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spent the money on energy, labor, your genetics,
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your nutrient, every. All your overheads are paid, and now you have
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an opportunity to pick up another 5 to 7%, depending on how
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much you're overdrying the flower. And then more important
397
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is the quality of the flower. You know, the industry has been going
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through a race to the bottom. And yeah, look at
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the beer world 40, 50 years ago when
400
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you had the Budweisers and the Pabst Blue Ribbons and,
401
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you know, just the major beers. And then came about
402
00:24:50,590 --> 00:24:54,310
craft beer. And quickly, guess what? A consumer
403
00:24:54,310 --> 00:24:58,150
today will pay more for four cans of beer that they will for a
404
00:24:58,150 --> 00:25:01,870
whole suitcase of Budweiser. Of course. Yeah. All right. And
405
00:25:01,870 --> 00:25:05,550
so, yes, the consumer is willing to pay a premium price
406
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for quality product, but you need to deliver a
407
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quality product. You just can't say it's a quality product. And when you deliver
408
00:25:13,370 --> 00:25:17,090
it, when they come back for more, it's got to be the same quality product.
409
00:25:17,730 --> 00:25:21,170
And with conventional systems, there's too many variabilities
410
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because of what time of year is. It has a great impact
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on their dry rooms where we give them
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consistent product year round, no matter what the climate is. So all of
413
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a sudden now you can start seeing the Coca Cola
414
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model for the msos. So someone who's growing
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and using our tech for dry cure in Florida will
416
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be able to deliver exactly the same product in Denver, Colorado, which
417
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is known for Colorado crunch. That's huge. It seems like
418
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obviously, like a lot of agriculture is still operating on a tradition
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of approximation and using traditional tactics.
420
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And we're moving to a world where everything is becoming
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controlled and predictable. Yes. And that's key, is getting
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proper control over it. A lot of people think they
423
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have control. Yeah. But really when you dig into
424
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it, it's a false sense of having control.
425
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When you really start digging into the numbers and graphing what's
426
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going on with the vapor pressure in the space, what's going on with the temperature
427
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in the space, a lot of it is dependent. If you think about the wine
428
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industry and teas industry, you know, people who probably have
429
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tons of experience or just knows an olfactory
430
00:26:34,610 --> 00:26:38,370
sense that is like way above, you know, normal, or the people that work in
431
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perfume industry, like, they have this sense of smell, so they can operate on instinct
432
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because their. Their. Their. Their senses are so heightened. But that's not
433
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the case. And you can't really replicate that because it's dependent on one person.
434
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That's an amazing point. And, you know, you talk about the person at
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facilities, the turnout, really good flour, and
436
00:26:57,100 --> 00:27:00,060
they're the person that says, okay, it's dry enough.
437
00:27:00,780 --> 00:27:04,580
Let's arrest the drying process and move it to cure. And I equate
438
00:27:04,580 --> 00:27:08,220
that to someone who's on the line cooking steaks at a
439
00:27:08,220 --> 00:27:12,060
steakhouse, and he's been there for years. And every steak goes out
440
00:27:12,060 --> 00:27:15,900
exactly the way the customer wants it. Medium, well, medium rare,
441
00:27:15,900 --> 00:27:19,700
rare, you name it, he never misses. And then he gets sick one
442
00:27:19,700 --> 00:27:23,350
day, and they get grabbed the guy on the dish line
443
00:27:23,910 --> 00:27:27,750
and say, stand here. Put the steaks on the grill.
444
00:27:27,910 --> 00:27:31,310
And then there's if, you know, in the restaurant world, it's like you point to
445
00:27:31,310 --> 00:27:34,950
your hand, and if the steak feels like this, it's medium. If it points
446
00:27:34,950 --> 00:27:38,150
like this as well. The thumb test. Right. Well, guess what?
447
00:27:38,470 --> 00:27:42,070
Probably more than half the steaks are going to come back. Oh, yeah. Because they're
448
00:27:42,070 --> 00:27:45,830
not cooked right. So, yeah, it can be done, but then you're depending
449
00:27:45,830 --> 00:27:49,630
on the. This one person. Yeah. Versus point of failure. Yeah. Back
450
00:27:49,630 --> 00:27:53,270
to sous vide. You put them in, they can be cooked Exactly. To the right
451
00:27:53,270 --> 00:27:57,070
temperature. Not that sous vide is a substitute for what you can
452
00:27:57,070 --> 00:28:00,150
do on a grill, but you get the concept there.
453
00:28:00,630 --> 00:28:04,070
So at indoor Icon, you know, obviously, as you were moving and
454
00:28:04,070 --> 00:28:07,750
explaining the benefits for the cannabis space, were you able to have
455
00:28:07,750 --> 00:28:11,190
conversations with other growers? Do you see applications, or are people
456
00:28:11,190 --> 00:28:14,950
interested in doing this? Are there other crops that are coming up? I'm curious
457
00:28:15,320 --> 00:28:19,120
what your insights were, what those conversations were like at the conference. Yeah. One that
458
00:28:19,120 --> 00:28:22,680
we'd love to find someone to work with is hops.
459
00:28:22,760 --> 00:28:26,360
Okay. Turns out hops and the cannabis plant are very
460
00:28:26,360 --> 00:28:29,640
closely related. You know, when you start understanding
461
00:28:29,640 --> 00:28:33,440
terpene profiles, there's many beers. If you take a good
462
00:28:33,440 --> 00:28:37,120
smell, you're like, oh, that's got a lot of cannabis terpene
463
00:28:37,120 --> 00:28:40,840
notes and stuff like that. And the hops has a lot of terpenes in
464
00:28:40,840 --> 00:28:44,370
it. But what is the industry doing now to dry
465
00:28:44,370 --> 00:28:48,170
hops? They're heating it, and terpenes boil
466
00:28:48,170 --> 00:28:51,210
off at fairly low temperature. So they're probably
467
00:28:51,690 --> 00:28:55,450
boiling off a good chunk of the terpenes in hops.
468
00:28:55,450 --> 00:28:58,530
And so what we're trying to do is find someone that we can work with
469
00:28:58,530 --> 00:29:02,130
that's willing to take a batch of hops, dry it with
470
00:29:02,130 --> 00:29:05,770
our technology and make some beer with it. Now, what might
471
00:29:05,770 --> 00:29:09,450
turn out is people go, this beer is disgusting.
472
00:29:09,850 --> 00:29:13,690
Because they never had beer with that many terpenes
473
00:29:13,690 --> 00:29:17,410
retained in the hops. Or the other side
474
00:29:17,410 --> 00:29:21,170
might be, oh my, I've never had a beer this good. This is
475
00:29:21,170 --> 00:29:24,970
amazing. Because they never had a beer that was able to express
476
00:29:25,290 --> 00:29:29,050
all the terpenes that were originally in the hops. We don't know
477
00:29:29,050 --> 00:29:32,330
which way it's going to go, but it's definitely worth a try.
478
00:29:32,730 --> 00:29:36,570
What was your take on the indoor farming, the broader indoor
479
00:29:36,570 --> 00:29:40,270
farming industry, from seeing all the vendors there and you know, all
480
00:29:40,270 --> 00:29:43,830
the challenges people are having. And obviously there's been a lot of
481
00:29:44,150 --> 00:29:47,750
news about failures in the space. And I think because people were coming at it
482
00:29:47,750 --> 00:29:51,350
from a technology play as opposed to realizing, hey, it's actually, you're a farmer, you
483
00:29:51,350 --> 00:29:54,750
need to grow. Yeah. And you need to have a crop that's profitable. So I'm
484
00:29:54,750 --> 00:29:58,470
curious what your take on the overall industry was. Wait, you know, I
485
00:29:58,470 --> 00:30:02,270
was walking around because, you know, we're doing all this work on vapor
486
00:30:02,270 --> 00:30:06,000
pressure VPD on the grow side and quickly
487
00:30:06,000 --> 00:30:09,600
learned the space is pretty crowded with people bringing
488
00:30:09,600 --> 00:30:12,800
in controls into the space. And I think
489
00:30:13,440 --> 00:30:17,120
there is a gap between, as you said,
490
00:30:17,440 --> 00:30:20,959
the farmer growing it and the people who are doing
491
00:30:20,959 --> 00:30:24,800
controls. And very often that control
492
00:30:25,600 --> 00:30:29,360
thought process backgrounds comes out
493
00:30:29,360 --> 00:30:32,510
of the comfort cooling and heating
494
00:30:33,150 --> 00:30:36,670
side of the world. You know, if you look at the industry, the
495
00:30:36,670 --> 00:30:39,870
bulk of equipment sold air conditioners,
496
00:30:39,870 --> 00:30:43,710
dehumidifiers, they've always been built and designed for
497
00:30:43,950 --> 00:30:47,710
comfort cooling. And then now people are modifying them
498
00:30:48,030 --> 00:30:51,830
for indoor ag, greenhouse, that type of
499
00:30:51,830 --> 00:30:55,510
thing instead of taking a whole new approach as,
500
00:30:55,510 --> 00:30:59,260
okay, what is the process requirements? And that's what
501
00:30:59,260 --> 00:31:02,540
makes us unique is we are a process
502
00:31:03,500 --> 00:31:07,020
system that's designed for the process of
503
00:31:07,020 --> 00:31:10,780
getting your proper product to the right water activity
504
00:31:10,780 --> 00:31:14,380
for shelf stability versus applying conventional
505
00:31:14,780 --> 00:31:18,620
comfort cooling equipment to accomplish it. Because, well,
506
00:31:18,700 --> 00:31:22,540
we had the discussion with air conditioning all over the place and fire
507
00:31:22,700 --> 00:31:26,430
no where, you know, what our technology was developed and
508
00:31:26,510 --> 00:31:29,870
does, is gives and our patents are about
509
00:31:30,270 --> 00:31:33,550
is independent control of what's called latent and
510
00:31:33,550 --> 00:31:37,230
sensible heat. Sensible heat is the temperature of the air.
511
00:31:37,630 --> 00:31:41,310
Latent heat is the amount of moisture in the air. Conventional air
512
00:31:41,310 --> 00:31:45,030
conditioners and dehumidifiers have a fixed sensible
513
00:31:45,030 --> 00:31:48,710
latent ratio or can be moved slightly. We give
514
00:31:48,710 --> 00:31:52,510
independent control of the two. So you create really zero in on
515
00:31:52,510 --> 00:31:56,230
what the plants need or what the product that you're
516
00:31:56,230 --> 00:31:59,710
doing post harvest needs. You also hinted at something bigger,
517
00:31:59,710 --> 00:32:03,510
layering AI on top of this environmental control. What would that
518
00:32:03,510 --> 00:32:07,110
unlock? It's going to. And what we're looking at is the
519
00:32:07,110 --> 00:32:10,910
AI to analyze what the plants are doing
520
00:32:11,390 --> 00:32:14,990
as a feedback for the control system. Okay.
521
00:32:14,990 --> 00:32:17,940
Yeah, but it's still a little early because
522
00:32:18,660 --> 00:32:22,340
first we have to get the controls in
523
00:32:22,340 --> 00:32:25,940
place and working and then you use AI to
524
00:32:25,940 --> 00:32:29,780
tune it. In the end, do you see a future where these environments are essentially
525
00:32:29,940 --> 00:32:33,700
self optimized based on the crop? Yes, it will get there,
526
00:32:33,940 --> 00:32:37,540
but like anything else over the years,
527
00:32:37,860 --> 00:32:41,220
it's going to have to do with sensor placement and
528
00:32:41,460 --> 00:32:45,130
how the sensors are reading. Because as we all
529
00:32:45,130 --> 00:32:48,850
know, garbage in, garbage out. Yeah. And if
530
00:32:48,850 --> 00:32:52,570
you have sensors that are not getting the right readings or the readings
531
00:32:52,570 --> 00:32:55,690
are skewed or off for whatever reason,
532
00:32:56,330 --> 00:33:00,130
well, your result is not going to be optimal. Yeah, it seems
533
00:33:00,130 --> 00:33:03,930
like the future looks really interesting when you combine
534
00:33:03,930 --> 00:33:07,490
precise environmental control with machine learning over
535
00:33:07,490 --> 00:33:11,220
time. Yep, that's going to be good. But it still needs some
536
00:33:11,220 --> 00:33:15,060
tweaking. What I learned early on when we were playing with
537
00:33:15,140 --> 00:33:18,900
VPD in grow rooms, asked about, well, how
538
00:33:18,900 --> 00:33:22,580
does the plant express itself if your VPD is
539
00:33:22,580 --> 00:33:26,100
too high or too low? And then it came back to,
540
00:33:26,100 --> 00:33:29,780
well, those are the same symptoms as too
541
00:33:29,780 --> 00:33:33,380
much or too little nutrient in the plant. Yes.
542
00:33:33,620 --> 00:33:36,980
Well, then it was like, well, wait, if your VPD
543
00:33:37,140 --> 00:33:40,960
is too high, the plant's going to take up more
544
00:33:40,960 --> 00:33:44,560
nutrients, so you're overfeeding the plant.
545
00:33:44,960 --> 00:33:48,000
So now is it the result of your
546
00:33:48,640 --> 00:33:52,480
ratio of nutrients to water or do you fix your
547
00:33:52,480 --> 00:33:55,440
VPD to get it in place and then fix.
548
00:33:56,080 --> 00:33:59,840
But both of those the plant expresses in
549
00:33:59,840 --> 00:34:03,600
its tips of the leaf and color and stuff similarly. So
550
00:34:03,930 --> 00:34:07,650
an AI, you know, is it going to adjust the nutrient level
551
00:34:07,650 --> 00:34:11,410
or is it going to adjust the VPD level? Because either one
552
00:34:11,410 --> 00:34:14,570
of them can cause a similar result if you're not.
553
00:34:14,970 --> 00:34:18,730
And that requires to some degree a good
554
00:34:18,730 --> 00:34:22,330
farmer who talks to his plants and is going to walk in there and goes,
555
00:34:22,490 --> 00:34:26,010
hey girls, you're happy or you don't look happy today,
556
00:34:26,090 --> 00:34:29,890
what's your problem? And they know, they'll know. All right, this
557
00:34:29,890 --> 00:34:33,410
is what we need to tweak. And so they can tweak it and then teach
558
00:34:33,410 --> 00:34:36,929
the AI a lesson. Yeah, because it's hard to
559
00:34:36,929 --> 00:34:40,569
replace that industry knowledge, that crop knowledge, that decades and
560
00:34:40,569 --> 00:34:44,329
decades of experience being in a grower, you know, it's. That's
561
00:34:44,329 --> 00:34:47,289
not something you can easily translate. You know, it's a Lot of it is instinctual,
562
00:34:47,289 --> 00:34:50,929
but over time you have a gut call like, and they are living things and
563
00:34:50,929 --> 00:34:54,609
you're engaging with them as living things. And I think that's important to
564
00:34:54,609 --> 00:34:58,329
remember. Yeah. Just this past weekend, being a
565
00:34:58,329 --> 00:35:02,130
bit of a science and food nerd, went to an Alton Brown
566
00:35:02,210 --> 00:35:05,650
show, who was the celebrity, and he
567
00:35:05,650 --> 00:35:09,410
spoke about AI can't cook. And it
568
00:35:09,410 --> 00:35:12,970
was great. He, you know, took a hundred index cards of various
569
00:35:12,970 --> 00:35:16,730
ingredients, mixed them up, pulled out 10 and said to AI, okay, give
570
00:35:16,730 --> 00:35:20,370
me a recipe. Yeah. Using these 10 ingredients. It was
571
00:35:20,370 --> 00:35:23,650
hysterical, you know. Yeah. I can't imagine what turned out.
572
00:35:23,890 --> 00:35:27,690
So where is an industry or application where you think this technology will show up
573
00:35:27,690 --> 00:35:31,530
next that people wouldn't expect? Oh, and
574
00:35:31,530 --> 00:35:35,250
you know, in post harvest, we're looking at tea. Oh, yeah.
575
00:35:35,250 --> 00:35:38,690
It's fascinating, you know, starting to look at
576
00:35:38,770 --> 00:35:42,530
tea as, you know, white tea, green tea, black tea.
577
00:35:42,609 --> 00:35:46,370
And then we learn it's all the same plant. And what differentiates
578
00:35:46,370 --> 00:35:50,170
them is the steps during post harvest. Yeah. And a lot
579
00:35:50,170 --> 00:35:53,930
of these steps that have been going on for hundreds,
580
00:35:53,930 --> 00:35:57,570
thousands of years. And we're watching and it's going, oh, we thrash
581
00:35:57,570 --> 00:36:01,370
it. Oh, no, you're not, you're breaking the trichome heads.
582
00:36:03,130 --> 00:36:06,770
So that could be a very interesting world for us to really start to
583
00:36:06,770 --> 00:36:10,170
explore next. But for us, the most
584
00:36:10,170 --> 00:36:13,970
exciting part is watching the cannabis
585
00:36:13,970 --> 00:36:17,810
industry start to realize that, yes, there's
586
00:36:17,810 --> 00:36:21,300
been so much work done growing the plant and yet
587
00:36:21,300 --> 00:36:25,100
nothing done on post harvest. Yeah. So
588
00:36:25,100 --> 00:36:28,100
I'm curious about your kind of day to day. You probably wear a lot of
589
00:36:28,100 --> 00:36:31,820
hats in your role as CEO. And there's always challenges, as
590
00:36:31,820 --> 00:36:35,339
there are with any exciting project like the one you're working on now. What's a
591
00:36:35,339 --> 00:36:39,180
tough question you've had to ask yourself recently? Well, first, thank you for
592
00:36:39,180 --> 00:36:42,900
the promotion, CEO, coo. The
593
00:36:42,900 --> 00:36:46,670
tough question is how do we
594
00:36:46,990 --> 00:36:50,550
get the legacy folks to embrace
595
00:36:50,550 --> 00:36:54,270
change? And what we see is so many people who
596
00:36:54,270 --> 00:36:57,950
are doing really well with their legacy methods,
597
00:36:57,950 --> 00:37:01,790
who can do much better, are afraid of change to a
598
00:37:01,790 --> 00:37:04,910
degree because they're not 100% sure
599
00:37:05,550 --> 00:37:09,390
why what they're doing is working. Because it might not all be
600
00:37:09,390 --> 00:37:13,240
backed in science. It's back to that touchy
601
00:37:13,240 --> 00:37:16,800
feely, the farmer feeling. But here we've got
602
00:37:16,800 --> 00:37:20,280
more science going for you to get you more repeatable
603
00:37:20,440 --> 00:37:24,240
and consistent results. Yeah. So for someone listening
604
00:37:24,240 --> 00:37:28,080
who's a grower, an operator or a producer, what's the one
605
00:37:28,080 --> 00:37:31,240
thing you'd want them to rethink about their current process,
606
00:37:31,800 --> 00:37:34,680
to see what current Science is available
607
00:37:35,320 --> 00:37:38,920
and their science and other industries that have been
608
00:37:38,920 --> 00:37:42,590
around for a really long time are proven and work. For
609
00:37:42,590 --> 00:37:46,070
example, water activity, the food industry
610
00:37:46,310 --> 00:37:50,070
for decades, the pharmaceutical industry for decades,
611
00:37:50,310 --> 00:37:53,870
even museums look at water activity to make sure their
612
00:37:53,870 --> 00:37:57,510
rare documents aren't devoured by mold. Yet
613
00:37:57,910 --> 00:38:01,590
in the cannabis world, people are still talking about percent moisture.
614
00:38:01,910 --> 00:38:05,630
And it really is not a good unit of measure to
615
00:38:05,630 --> 00:38:08,310
know you have shelf stable products.
616
00:38:09,330 --> 00:38:12,810
So it's shifting away from those legacy
617
00:38:12,810 --> 00:38:16,290
methods and going into the more solid science of this.
618
00:38:16,450 --> 00:38:19,410
That makes a lot of sense. Well, I really appreciate your team. Again, like I
619
00:38:19,410 --> 00:38:23,130
said, reaching out and this deep dive into understanding, you know, a lot of things
620
00:38:23,130 --> 00:38:26,970
about this growing process is there. You know, obviously you've got your hands full
621
00:38:26,970 --> 00:38:30,810
with cannot troll. But as a tinkerer and as a scientist and as someone
622
00:38:30,810 --> 00:38:34,490
who likes to learn new technologies, are there other things that
623
00:38:34,490 --> 00:38:38,240
you're kind of working on in the background should. Why are you
624
00:38:38,240 --> 00:38:42,000
thinking new ideas all the time? I imagine right now it's here. This is all
625
00:38:42,000 --> 00:38:45,640
consuming, but it's different platforms.
626
00:38:45,800 --> 00:38:49,320
Okay. And different configurations of the technology
627
00:38:50,040 --> 00:38:53,880
to fit different market segments, you know. So
628
00:38:53,880 --> 00:38:57,640
we have our cool cure home grow unit, which is good
629
00:38:57,640 --> 00:39:01,240
for the home grower. It'll take a plant of about a little over two
630
00:39:01,240 --> 00:39:04,310
pounds, two and a half pounds. And then we got our first
631
00:39:04,790 --> 00:39:08,582
kits, but those start at about 160,
632
00:39:08,838 --> 00:39:12,470
180 pounds. So we're coming out with
633
00:39:12,470 --> 00:39:16,270
products to fill that gap, which is going to be more
634
00:39:16,270 --> 00:39:20,110
targeted to, let's say the social clubs in Germany, to people
635
00:39:20,110 --> 00:39:23,950
who have larger home grow. So that's where a lot of our
636
00:39:23,950 --> 00:39:27,350
time is right now, to get all of these new products out the door.
637
00:39:27,670 --> 00:39:30,710
So you do have a unit for a home grower or a solo home grower?
638
00:39:31,030 --> 00:39:34,710
Yes, that's our cool cure unit. Yep. Okay. Yeah. And we've shipped those all
639
00:39:34,710 --> 00:39:38,350
over the world. Okay. Yeah. I'm sure the people who might want to try their
640
00:39:38,350 --> 00:39:41,990
hand at the tech, that'd probably be a good place to start. Yeah, absolutely.
641
00:39:41,990 --> 00:39:45,590
Well, David, thank you so much for your time. I really enjoyed our conversation. Where's
642
00:39:45,590 --> 00:39:48,670
the best place for folks to learn more and to connect with you? If they
643
00:39:48,670 --> 00:39:51,990
go to our website cannot trolls.com with an S.
644
00:39:52,310 --> 00:39:55,590
We have lots of white papers and scientific information.
645
00:39:56,720 --> 00:40:00,520
So when we say it's better, we won't say it's better unless we
646
00:40:00,520 --> 00:40:03,200
have technical documents that
647
00:40:04,160 --> 00:40:08,000
prove and explain what the outcome is and why we can say it's better. That's
648
00:40:08,000 --> 00:40:11,200
all on our website. We're also on all the social media
649
00:40:11,360 --> 00:40:13,840
platforms, LinkedIn and
650
00:40:15,120 --> 00:40:18,720
the whole round of them. We're there. Well make sure all those links are in
651
00:40:18,720 --> 00:40:21,880
the show Notes. Thanks again for your time. I really enjoyed this conversation and for
652
00:40:21,880 --> 00:40:25,360
sharing your insights with our audience. It's great and I look forward to meeting again.
653
00:40:25,600 --> 00:40:26,800
Likewise. Thanks.