1 lb. cooked macaroni, any kind
2 tbsp. vinegar
2 c. shredded cheddar cheese
2 c. mayonnaise
4 tsp. mustard
1 sm. jar olives with pimientos

Cook macaroni, drain and rinse with cold water. Mix mayo, mustard and vinegar. Mix with macaroni. Put olives and cheese in. Mix well. Chill 1 hour.