A tangy macaroni salad with lots of flavor. This recipes doubles really well (we did not double the mustard or the salt).
In a large bowl, combine mayonnaise, vinegar, mustard, sugar, salt and pepper. Mix until smooth.
Add macaroni, celery, green pepper and onion. Toss to coat.
Cover and regrigerate for at least two hours to blend flavors.
This salad can be prepared the night.