Lift the fillets from three medium-sized soles, put them in a buttered stewpan, with one very finely chopped shallot, moistening with half a glassful of white wine, and three tablespoonfuls of mushroom liquor. Cook for six minutes, then lay them on a dish, reduce the gravy to half, adding twelve cooked mussels, six mushroom buttons, and half a pint of good Allemande sauce (No. 210). Thicken it well with a tablespoonful of butter, tossing till well dissolved, and throw it over the fillets with the juice of half a lemon. Serve with six croutons of fried bread (No. 133) around the dish.