Watch out for signs of mould. If you see any green mildew, white fuzzy mold, or dark black places (mildew) within the mushroom, do not eat it. Don’t get worried if the thing is blue staining—This is often typical in Psilocybe mushrooms and an indicator that the mushrooms incorporate psilocybin.  https://social-lyft.com/story9454344/the-greatest-guide-to-psilocybin-chocolate-bar-usa