Watch out for indications of mould. If you see any environmentally friendly mold, white fuzzy mold, or dark black places (mildew) about the mushroom, usually do not eat it. Don’t stress if you see blue staining—This is certainly widespread in Psilocybe mushrooms and an indicator that the mushrooms contain psilocybin.  https://socialstrategie.com/story4840535/about-psilocybin-chocolate-bars-nyc