Ingredient:

• 3 tablespoons butter
• 1 cup chopped onions
• 1 ½ cups chopped celery
• 2 ½ cups milk
• 6 tablespoons all-purpose flour
• 1 ½ teaspoons butter
• 4 ounces Cheddar cheese, sliced
• ½ teaspoon salt
• ½ teaspoon black pepper
• ¼ pound crabmeat
• ¼ pound lobster meat
• ¼ pound medium shrimp
• ¼ pound scallops