Look out for indications of mould. If the thing is any green mold, white fuzzy mildew, or darkish black places (mildew) around the mushroom, don't take in it. Don’t fret if the thing is blue staining—This is certainly popular in Psilocybe mushrooms and an indicator that the mushrooms comprise psilocybin.  https://pr8bookmarks.com/story19604235/strongest-psilocybin-chocolates-usa-an-overview