I've been looking into the dry ice extraction and I will definitely be giving it a try.
Sorry to go off topic but had a question. Do you dry the trim first and than you put it in a coffee grinder? Or do you just take the trim straight off the plants and grind it up?
Last batch was from trim in a paper bag from the freezer but you can use fresh. I pulled the sacks and dropped them into the screen bag with the dry ice, no grind is required. The ice will pulverize the leaves and stems.
As far as storage, I don't compress it. I fold it up in parchment paper squares and store in an air tight glass container with a hydrpack at 62% humidity. I also break it up by quality and strain. I keep it in dark storage at around 74 degrees. Mmmmm good.
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