1 1/2 c. elbow macaroni, cooked
1 hard boiled egg, chopped
2 tbsp. chopped celery
2 tbsp. chopped onion
3 tbsp. mayonnaise or salad dressing
1 tsp. sugar
1 tsp. vinegar
1/4 tsp. prepared mustard
1/4 tsp. salt
pepper, to taste

Combine all ingredients, stirring lightly. Cover and chill for several hours before serving.