Melt butter over low heat in a heavy saucepan. Blend in flour and
seasonings. Cook over low heat, stirring until mixture is smooth and
bubbly. Remove from heat. Stir in milk. Bring to boil, stirring
constantly. Boil 1 minute. Remove from heat and carefully stir 1/2
to 1 cup cooked shrimp. lobster, crab meat, salmon, or tuna pieces
into the sauce.