1 1/2 c. dry shell macaroni
1 c. celery
1 c. shredded carrot
1/4 c. onion, chopped
1 can Cheddar cheese soup
1/4 c. cooking oil
2 tbsp. vinegar
1 tsp. sugar
1 tsp. prepared mustard
1 tsp. Worcestershire sauce
Salt and pepper to taste

Cook macaroni; drain and cool. Mix with rest of ingredients. Blend well. Chill several hours. 4-6 servings.