Mild Mustard Sauce
["1 Tbsp. butter or margarine", "1 1/2 tsp. all-purpose flour", "1/4 tsp. salt", "1 c. evaporated milk", "1 Tbsp. plus 1 tsp. prepared mustard", "1 Tbsp. diced pimiento", "1/2 tsp. lemon juice"]
["Melt butter in a heavy saucepan over low heat.", "Add flour and salt, stirring until smooth.", "Gradually add milk, cook over medium heat, stirring constantly, until mixture thickens.", "Stir in remaining ingredients.", "Cook until thoroughly heated.", "Serve hot with roast beef or ham."]
["butter", "all-purpose flour", "salt", "milk", "mustard", "pimiento", "lemon juice"]