It's pretty obvious not many people here are into mescaline... Let me tell you something about cactus mate... if you want a legal source of mesc, and your looking into cactus eating... forget about not getting sick. It is literally inevitable. Cactus's flesh and skin are just one of natures highly durable plant life. Your stomach can NOT digest it. So expect a vomit or two. Another thing about San Pedro, Peyote, and Mescaline altogether is that it is not a "trip" in the normal sense of the word. If you want to see shit morph and melt into other shit, then I suggest something like LSD or shrooms. Mescaline can and will change you and your entire outlook upon life with one experience.. keep this is mind. It's really not something to play with. As for the best source, LordRuffle is right, http://mindzeyecreations.com has the most potent peruvian torch powder (flesh only) on the market. I suggest a 50g dose eaten quick chased with a bit of orange juice for threshhold effects, 100g for a spiritual experience.