If the taste of the tea bothers you (it will) just extract.
Knocking back a shot glass with 250mg of mescaline hcl in it chased with fruit juice isn't exactly nice, but its a far cry from cactus snot tea. As far as san pedro, its a crapshoot as far as potency goes. Better off with mature yote, or some bridgesii cuttings. At least with bridgesii theres more active cactus vs. inactive cuttings.
I'd look into getting a foot or two of bridgesii, and read up on mescaline a/b extractions. First time i had mescaline it was extracted. When i made tea it was my first and last time doing so, getting that cup of snot down was fucking hard as shit. Plus with extracted mescaline you know the potency, cuttings made into tea could be all over the place.
Pedro/Torch is worth it, so long as you know its potent, but there being a ton of inactive/barely active cuttings floating around its definitely a risk buying them. Much more likely to get active cuttings with brigesii ime, and from what I've heard from multiple people over the years.