8 oz Mueller's Small Elbow Macaroni
1/4 cup onion, chopped
1/4 teaspoon pepper
1 cup celery, sliced
1 cup green or red pepper, chopped
1 tablespoon prepared mustard (optional)
1 teaspoon salt
1 teaspoon sugar
2 tablespoons cider vinegar
3/4 cup mayonnaise

Cook and drain pasta according to package directions; rinse with cold water to cool. 

In large bowl combine mayonnaise, vinegar, mustard, sugar, salt and pepper. 

Add cooked pasta, celery, green pepper and onion; toss to coat. 

Cover; chill to blend flavors.