2 c. uncooked elbow macaroni
1 (1 lb.) can red kidney beans, drained
1/2 c. chopped celery
1 env. Chili-O mix
1 c. mayonnaise
2 tbsp. ketchup
2 tbsp. vinegar

Cook macaroni. Drain and chill. Stir in remaining ingredients. Tastes best when prepared several hours ahead of serving time. Store in refrigerator.