1 c. plain yogurt
2 tsp. prepared mustard
2 tsp. horseradish
2 c. cooked, cubed potatoes
1/2 c. sliced celery
1 med. cucumber, sliced
1/4 c. onion, sliced
1 tbsp. chives, chopped

In bowl, combine yogurt, mustard and horseradish. Add remaining ingredients; toss to mix well. Refrigerate to chill. Makes 8 servings, 60 calories each.