Beefsteak fungus
A red, fleshy tongue on oak that looks like liver and bleeds red juice when cut. Edible, sour-tasting.
Fistulina hepatica
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.