"This recipe was shown to me by my husband's grandmother. I make this on the family cookouts and holidays. It's very easy and only takes a few minutes to complete it. The family just loves it."
1Pour 2 cups of warm water into a bowl. Stir in the instant potato flakes until well blended. Mix in the mayonnaise, milk, relish, mustard and onion. Season with salt and pepper. Mix well, and refrigerate until needed.