FILLETS OF FLOUNDER AU GRATIN
Cook together three tablespoonfuls of butter, one tablespoonful of flour, a slice of onion, and a bay-leaf. Add two cupfuls of chicken stock and cook until thick, stirring constantly. Strain, and add a tablespoonful of lemon-juice. Dip the fillets of fish into melted butter, season with salt and pepper, cover with sauce and bread-crumbs. Bake for twenty minutes in a very hot oven.