Source: Martha Stewart Living, October 2003
- 1/2 cup mayonnaise
- 2 tablespoons sour cream
- 1/4 cup cider vinegar
- Coarse salt and freshly ground pepper
In a small bowl, whisk together the mayonnaise, sour cream, and vinegar; season with salt and pepper. Refrigerate, covered, until ready to use, up to 4 days.