Look out for indications of mould. If the thing is any eco-friendly mould, white fuzzy mildew, or dim black places (mildew) to the mushroom, don't take in it. Don’t worry if you see blue staining—this is frequent in Psilocybe mushrooms and an indicator that the mushrooms contain psilocybin.  Getting ready https://psychedelicfarmmeds.com/product/wavy-bar-chocolate-mushroom/