1 cup mayonnaise
1/2 cup tomato ketchup
2 teaspoons white distilled vinegar
1 1/3 tablespoons Worcestershire sauce
1 teaspoon garlic powder
1/4 teaspoon salt
1 1/2 teaspoons freshly ground black pepper
Place all the ingredients in a small bowl and mix well.
Refrigerate the sauce in an airtight container for a few hours before serving.