Sweet And Sour Shell Salad
["1 lb. box pasta shells", "1/2 c. vegetable oil", "1/2 c. vinegar", "1/2 c. sugar", "1 can tomato soup", "1 cucumber, finely chopped", "1 c. celery, chopped", "chopped onion (if desired)"]
["Cook pasta shells as directed.", "Mix all the ingredients together until well blended.", "Pour over warm shells, tossing lightly.", "Refrigerate until cool, but best if made the day ahead. Serves 6 to 8."]
["pasta shells", "vegetable oil", "vinegar", "sugar", "tomato soup", "cucumber", "celery", "onion"]