1 (8 oz.) pkg. shell macaroni
1 c. mayonnaise
1/3 c. chopped celery
1 tbsp. chopped onion
1 1/2 tsp. salt
1/4 tsp. pepper
1 (7 oz.) can tuna, drained
1/4 c. chopped green pepper

Cook macaroni according to package directions. Drain; rinse with cold water; drain again. Mix with mayonnaise and onion. Cool. Add remaining ingredients; chill. Yield: 6 servings.