Sour Cream Potato Salad
["7 medium potatoes", "1/3 c. Italian salad dressing", "1 c. sliced celery", "5 hard-boiled eggs, chopped", "2 Tbsp. horseradish mustard", "1/3 c. chopped onion", "1 c. mayonnaise", "1/2 c. sour cream"]
["To 2 cups medium white cream sauce, add 1/2 cup sour cream, 2 tablespoons prepared mustard and 1 tablespoon prepared horseradish."]
["potatoes", "Italian salad dressing", "celery", "eggs", "horseradish mustard", "onion", "mayonnaise", "sour cream"]