Here's what I'm using as a guide.
https://www.rollitup.org/subcools-old-school-organics/45008-glycerin-tincture-101-a.html I think glycerine is a little better on the mouth than 151. That shit burns... even if it is a drop, lol.
Who dat... Nice fuckin plants... Nice fucking shop. That shit is clean.
I just remembered my one experience with tincture. Not sure what the fucking person at the Pot shop was thinking when they told me how to use it... but I bought tinture once. It was about... I'm not sure... like a "cap" full of liquid. Like if you filled up the cap of a 20 oz sprite bottle. Anyways, had little bits of hash in it. Like two tiny tiny bits. So they guy told me to heat it with a match till the hash dissolved then drink the whole thing. HOLY SHIT!!!!!!! I was like Zombie stoned like you wouldn't beleive for maybe 8-10 hours. Just sat on the couch. Too stoned to watch tV. I just had to hold on. Man. I think 2 drops would have done the trick. It was wild as hell.