I think there is a taboo on doing extractions on ungrinded bark.
I thought about this because at one point I received full bark instead of grinded and I did not know what to do with it
Inspired by this thread I applied cyb's tek to full bark but with a twist. For a few days I took 50g of bark, put water with vinegar in it and just did repeated cycles of boiling, freezing, and unfreezing in no particular order. took the liquid at the end, added water again for one final boil to squeeze more juice and just put in my standard 750 ml glass bottles the two liquids. After that I just did the standard cyb tek things. I did it more of a joke but I got some really fluffy stuff comparable to a grinded bark pull on my first time, 430 mg. Thinking I maybe used some naphta from previous extractions that already had DMT. I used virgin naphta for a second pull and again I got that nice yellow-white fluff on my plate, it is now drying.
so yeah, maybe you lose 10-15% of the material (although this doesn't seem to be the case), but not grinding it is convenient enough and you can probably concentrate the mimosa tea for a larger extraction. I'll play more with this