Easier-Than-Pie Pretzel Dip

Ingredients
- 1 cup sour cream
- 1 cup mayonnaise
- 1 cup mustard
- 1/2 cup sugar
- 1/4 cup dried minced onion
- 1 envelope Ranch Salad Dressing mix
- 1 tablespoon horseradish (from a jar)
Directions
Mix all really well. Refrigerate, the longer the better, but minimum 30 minutes. Serve with pretzels.