This recipe was taken from the Standard-Examiner Recipe Exchange Cookbook and was submitted by Jim Miller.
5 ounces mayonnaise
6 ounces ketchup
4 tablespoons buttermilk (shake before using)
1/4 to 1/2 teaspoon Worcestershire sauce
1/4 to 1/2 teaspoon paprika
1/2 teaspoon garlic powder
Mix all ingredients together with wire whip. Refrigerating overnight improves flavor.