I've been doing extractions for a few months now and I know my acid wash is where I am losing it if it is MY issue. I'm still debating if the bark I am getting is not the true inner root bark.

Anyways I have simmered my vinegar acid wash about 110F without a lid on it and did 3 one hour simmers. I have also done 3 one hour boils with a lid and without a lid on 2 different batches of bark. I have only actually burnt the bark on my hard boils without a lid on. After being frustrated on my low yields, I let the bark sit in the pot with vinegar and water for 2 1/2 days in the dark and stirred occasionally. When I ran it I only got a gram off of 500 grams of bark, the first run with 2 separate pulls. I know I'm not messing up the basing or the end extraction parts wtf?! I know the ions are protanted which means they can handle heat in the acid form (from what I was told)? Please shine some light on me brothers and maybe sisters.

I am getting my bark from a US source that comes from Hawaii. Help a hippie out!

Acid boils are not needed for a good yield, see all the STB teks. And if you don't burn the bark i don't think you can destroy The Molecule at 100°C.

If you did everything well, sorry man, the problem is the bark.

Thanks brother I think you're right. I've done it so many times I've narrowed down the chance that it's actually something I am doing wrong. Been eyeing the lime teks for awhile now. Kudos and good vibes!

good quality powdered bark is hard to come by in the usa.
try Europe if you can.