Blend 6 tablespoons butter or fat with 6 tablespoons flour, 1 teaspoon salt, and 1/8 teaspoon pepper. Cook until bubbling. Stir in 1 1/2 cups well seasoned chicken broth, 1 cup half and half. Boil 1 minute, stirring constantly. Add 1 cup cooked chicken or more, 1 cup sauteed sliced mushrooms, 1/2 cup slivered green pepper, 1/4 cup slivered pimento. Add 2 tablespoons sherry just before serving.