1 can cream of celery soup
1/2 c. mayonnaise
2 tbsp. cider vinegar
8 oz. cooked cork screw macaroni (1 pkg.)
1 (6 oz.) can tuna, drained
10 oz. pkg. frozen mixed vegetables, thawed

Stir together first 3 ingredients. Add macaroni, toss to coat well. Add tuna and vegetables. Toss gently. Cover and refrigerate at least 4 hours.