No no, the other day while i was making my usual oil, i additionally had another small normal pot going with some water, 12ml olive oil, 20grams fresh material, for 4 hours.
Now after sampling that 'experimental' batch, i'm sold on the water/oil method.. it really does allow you to get more cannabis into the olive oil.
Next step is to do a real batch with lets say 400grams fresh material, 0.2L olive oil (instead of 1L), several liters of water, and in a pressure cooker for about 2 hours (temperature goes up even for water in the pressure cooker). Only thing i'm gonna try to check first is the exact water temperature under pressure in the pressure cooker, and then adjust cooking time accordingly.. more or less should be about 2 hours though.
edit.. i MEANT pressure cooker, i just realized i was typing crockpot previously, soooorryyy!!
edit2.. i am now on the hunt for a pressure cooker with adjustable pressure and pressure gauge, then i would know exactly what temperature is in there, and could adjust it accordingly..
edit3.. found some pressure cookers with 2 'settings', 7 psi for 112 degrees celsius and 12 psi for 118 degrees. Perfect for 1.5 hours for THC extract and 1.1 hour for CBD extract.
If you're confident that's the way to go then go for it! I'll be waiting to hear what happens!
I can't explain why but for some reason I really like the idea of the pressure cooker, however, I don't know if or how pressure can affect the decarboxylation process. I've only ever seen decarboxylation time vs temperature (well, conversion of THCA to THC as a function of time and temperature) but not as a function of pressure. Just like the boiling point of water changes with pressure, the ideal decarboxylation time may change with pressure too.