Clean a large striped bass and divide into fillets. Put into a fish-boiler with three tablespoonfuls of butter, two large onions, sliced, a bunch of parsley, a bay-leaf, salt and pepper to season, and red wine and water, in equal parts, to cover. Simmer for an hour, drain the fish, take out the parsley, strain the liquid, and spread the cooked onions over the fish. Cook three tablespoonfuls of flour in two tablespoonfuls of butter, add the strained liquid and cook until thick, stirring constantly. Take from the fire, add the juice of a small lemon, a tablespoonful of anchovy essence, and two tablespoonfuls of butter. When the butter is melted, pour over the fish and serve.
Clean and trim a large striped bass. Put into a baking-pan with four tablespoonfuls of olive-oil, a small onion, chopped fine, salt and pepper to season, a bunch of parsley, and two cupfuls each of white wine and white stock. Cover and cook for an hour in a moderate oven, basting often. Drain the fish and remove the parsley. Strain the sauce. Brown two tablespoonfuls of flour in one of butter, add the strained liquid, and cook until thick, stirring constantly. Add the juice of half a lemon and a tablespoonful of minced parsley. Pour over the fish and serve.