Crockpot Oyster Stew

1 1/2 quarts milk
6 tablespoons butter
2 teaspoons salt
1 teaspoon Worcestershire sauce
1 pint or more oysters, with liquid

Put all ingredients except oysters in a 3 1/2-quart crockpot. Cover and cook on HIGH for 1 1/2 hours. Stir well. Add oysters and cook on LOW for 1 to 3 hours.

Serve hot.