Ingredients
- 1/2 cup mayonnaise
 - 1/3 cup ketchup
 - 1 tablespoon red wine vinegar
 - 1 tablespoon finely chopped onion
 - Salt and pepper to taste
 
Directions
In a small bowl, whisk together the mayonnaise, ketchup, vinegar, onion, salt and pepper until thoroughly combined. Refrigerate until ready to use.
