Macaroni salad is a salad, served cold made with cooked elbow macaroni pasta and usually prepared with mayonnaise. It is often served as an accompaniment to barbecue, fried chicken, or other picnic style entrees. Like any dish, national and regional variations abound but generally it is prepared with raw diced onions and celery and seasoned with salt and pepper. Canned tuna is also a very popular ingredient. This is a salad that everyone seems to love. Learn how to make Macaroni Salad by following this easy recipe. Enjoy!