1/4 c. mayonnaise
2 Tbls. ketchup
1 t. sweet pickle relish (dill relish works well too)
1 t. white sugar
1 t. white vinegar
1 t. coarse ground pepper
Whisk all ingredients together in a bow. Refrigerate until ready to use.
When ready to use, spread on bottom of hamburger bun, add a grilled hamburger with cheese melted on top. Lettuce and tomato optional.