I usualy use Cyb's tek but for the sake of extraction science i did an A/B and i thought i could report what i noticed. Nothing revolutionary but, once, i read somewhere (don't remember where^^)learn share expand.

- Material : 250g shredded MHRB (not thinly)
- Soaked in slightly acid water (a dash of vinegar) in a warm bain-marie for 1h
- Freezed & tawed 3 times
- Boils : I used a pressure cooker 3x30min but i think 30min i overkill (not tried less though)
- Each boil in 3 liters water + dash of vinegar
- The 3 boils were filtrated with a cloth, combined and reduced to ~2L
- After a decant for a night i keeped the liquid and add 2L of fresh water to the mud which been shaked here and there for a day at room temp and decanted in the fridge for a night
- Keeped the liquid , combined with the boil and reduced to 2L
- I processed pulls with naphtha (4 pulls) after salt and caustic soda were added. Yield 3,6g of tanned DMT. I've not finished yet cause i'm still pulling the last goodies with xylen but i don't think it will change much the yield
- To the remaining mud i add 1,5L of fresh water and runned an extraction. yield 1,1g of tanned DMT
- To be sure to get all the magic, i freeze & tawn one more time the already boiled root's bark, PC it 2x20min and then extract. Yield 0,1g

Total yield : 4,8g/250g => 1,9%. so far my best yield and i hope with the last xylen pulls i will hit the legendary 2% mark
I haven't finished (yet) magic from the last extraction and now i have a hudge amount of fresh DMT, i've to convert it to fumarate for storage (and oral ROA). Yeah, new chemical adventure !

Conclusion
- no need to have MHRB in powder, shredded is enough
- with a PC, 3 boils are enough
- If you make brew (aya analog) and decant solids, it worth to run an extraction with them as they contain ~25% of the goodies.


And, to finish, a bit of pron. Enjoy