- 1/2 cup mayonnaise (such as Kraft®)
- 3 1/2 tablespoons dill pickle relish, divided
- 1 1/2 teaspoons capers
- 2 tablespoons chopped onion, divided
- 1/2 teaspoon dried parsley flakes
- 1/2 teaspoon white sugar
- Blend mayonnaise, 2 tablespoons relish, capers, 1 tablespoon chopped onion, parsley, and sugar in a blender until smooth. Stir remaining relish and onion into the blended mixture.
- Transfer sauce to a bowl, cover with plastic wrap, and refrigerate at least 2 hours before serving.