1 c. mayonnaise
2 tsp. cider vinegar
Dash of pepper
4-6 oz. twist macaroni, drained
7 oz. chicken, drained
1 c. cooked peas (frozen)
1 c. chopped celery
1/4 c. chopped red onion

In a large bowl, stir together first 3 ingredients. Toss in remaining ingredients and cover. Chill.