Ingredients

　　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.

　　Reprinted with permission from The Martha Stewart Living Cookbook: The New Classics by Martha Stewart Living Magazine, copyright © 2007. Published by Clarkson Potter, a division of The Crown Publishing Group.Buy the full book from Amazon.