OP did not point out In case the 10 - twelve gr bark was powdered or not, I presume powdered for a cold tek. I would in no way chilly soak a non-powder, not even finely shredded, since that may be throwing away material imho. You can generally try out https://bookmarkforce.com/story20097260/indicators-on-ayahuasca-drug-where-to-buy-you-should-know