Asturian fish

Finely chop the onions and fry in 40 g of butter, pour in the flour, fry with the onions, pour in 250 ml of water, stir thoroughly so that there are no lumps. Add wine, chocolate, cloves, cinnamon, salt and pepper. Cut the fish into portions, put in low dishes greased with fat, pour over the sauce and simmer over low heat Clean the mushrooms, finely chop, extinguish in the remaining butter. Before serving, put the mushrooms in dishes with fish, let them brew for 10 minutes. Boiled rice is recommended on the side dish.