Giant polypore
Huge rosettes of fan-shaped caps at the base of beech and oak, bruising black. Edible only when very young.
Meripilus giganteus
edible
A wood-decay fungus that breaks down wood – found on stumps, trunks and branches in the forests of Czechia and Slovakia.
Edibility: Edible when correctly identified and cooked. Never eat mushrooms you have not identified with certainty.