The shaggy ink cap (Coprinus comatus)

Eatable but...be careful! Warning! This mushroom is dangerous when combined with alcohol (abstainers can eat it after cooking without harm). The coprine contained in it blocks the metabolism of ethyl alcohol (more precisely, it blocks the decomposition of acetaldehyde into acetic acid), which causes intoxication of the body with aldehyde, manifested by reddening of the face, feeling hot, vomiting, headaches

Polska nazwa : Czernidłak kołpakowaty