Almost 2 years ago I went to Camden Market in London and bought some supposed 'San Pedro' extracts. For all this time I had thought I had lost it but recently I was looking through my old little stash and found them again. Unfortunately, San Pedro is something I've never actually been able to try and literally no one I've ever asked knows how to get any or even what it was. I'm pretty sure all the 'extracts' are the cactus skin, if it is even 'San Pedro' skin. They're light green, speckled with tiny bits of white, on one side. On the other side is just a yellow-ish layer. They are very rigid and snap apart. Sorry if this description is vague but I have no experience with cactus of any kind, I would of just put up a picture but I don't have a digital camera and my webcam would be very low quality. I was wondering if you could tell me if it's real or not and if it's even worth trying.
I can only tell you about fresh San pedro. If you slice San pedro its star shaped, and there is obviously still skin on it which you get rid of. Underneath the skin there is a dark green layer which contains the majority of mescaline, underneath that there is a yellow portion which is the majority of the cactus, and the round circle is the core which you can also get rid of.
I'd say around 20g worth but that's just an estimate. I don't think I have any scales in my house would be sensitive enough to weigh this. If I was to ingest this all at once would I feel probably feel anything?