Stalker noted in The Serpent's Promise, the new book by biologist Professor Steve Jones, mentions probably the first example of humans consuming mushrooms.
An 8,000 year old cave painting from Algeria shows a priest about to eat a mushroom. He also mentions ambrosia, the sacred drink of the pre-Hellenic tribes of Greece; it was according to Robert Graves a distillation of a psilocybin-filled fungi.
Just shows you how revered the mushroom was in human history.
