Macaroni Salad - cooking recipe

Ingredients

1 stalk celery, chopped
1/2 small onion
1/3 c. mayonnaise
1 Tbsp. vinegar
1 Tbsp. sugar
1 tsp. prepared mustard
3/4 tsp. salt
pepper as desired
3 c. cooled, drained, cooked macaroni (about 1 1/2 c. uncooked)
1 hard-boiled egg, chopped

Preparation

Mix all ingredients, except macaroni and egg, in large bowl. Add macaroni and egg.
Mix lightly.
Chill before serving.