1 c. Hellmann's mayonnaise (real or light)
2 tbsp. vinegar
1 1/2 tsp. salt
1 tsp. sugar
1/4 tsp. pepper
4 c. cooked potatoes
1 c. sliced celery
1/4 c. onion, chopped
2 hard-cooked eggs, chopped

Combine first 5 ingredients. Stir in remaining ingredients. Cover and chill.