My friend in Antarctica writes:    "Okay, I worked up 15g of cebil exactly as our friend Baron describes in the Erowid post. The only exception was that after the acid extraction, the resulting dried material wasn't a goo, it was more like a hard fruit leather (it peeled off the plate in a sheet) and it was completely insoluable in IPA - the alcohol didn't even take on a color. The material dissolved readily in water however, so I made a thin syrup of that and added an equal amount (7.5g) of calcium hydroxide. This made a pea green paste of the reddish brown syrup which dried overnight to becone black and hard as a rock. The black rock was crushed in a mortar and pestle and extracted with acetone three times. The last  extraction was noticably lighter than the first two so I called it good at this point. These extractions were combined and evaporated and I've just scraped up 300mg of dark brown slightly sticky material with a distinct indole scent to it. Bioassay to follow. I've included the extraction part of the Erowid article below for reader's easy reference."      [i:cead0414c1]So I played around quite a bit and finally invented my own very extraction technique. Here’s how it’s done. Boil the powdered beans in water made pH 3 with hydrochloric acid for about an hour, and then filter out the beans, and repeat 2 more times with new water, also made pH 3 with hydrochloric acid. Concentrate the combined water extracts down and evaporate to leave some solid brownish gunk. Weigh this gunk and measure out an equal portion of calcium hydroxide (the same pickling lime used to make Yopo and Vilca snuff!).     Dissolve the gunk in a small amount of isopropyl alcohol, just enough to make it a thick syrupy liquid, then add an equal portion of water, then mix in the calcium hydroxide. Mix it very well. You don’t want any clumps. It should be the consistency of thick pea soup. Let it sit for about 6 hours for the calcium hydroxide to react with the bufotenine, creating the basic salt calcium bufotenate. Now evaporate it (you can use an oven at 300 F for this step). Once it’s evaporated completely add a generous portion of acetone. Mix it well. The acetone won’t dissolve any of the calcium hydroxide, or much else, but will easily dissolve the calcium bufotenate. Let it sit an hour or more for the non-soluble particles to sink to the bottom, once the acetone takes on a clear dark amber color, poor your mix through a filter to obtain the acetone.     You can repeat the acetone extraction with new acetone a few more times until its clear. Evaporate the combined acetone to get an extremely potent extract that is nearly 90% pure calcium bufotenine, which is one of the most potent forms of bufotenine. It’s the form found in properly make Yopo and Vilca snuff that has been used for thousands of years in South America. It’s more psychoactive than free-base bufotenine and much more psychoactive than the acidic salt form found in the unprocessed beans.[/i:cead0414c1]