Ingredients:
1/2 cup mayonnaise
2 tablespoons ketchup
1 tablespoon white vinegar
2 teaspoons sugar
2 teaspoons sweet pickle relish
1 teaspoon finely minced white onion
1/8 teaspoon salt
1 dash black pepper

Combine all of the ingredients in a small bowl. Stir well.
Place dressing in a covered container and refrigerate for several hours, stirring occasionally, so that the sugar dissolves and the flavors blend.