Macaroni salad is a type of pasta salad, served cold made with cooked elbow macaroni and usually prepared with mayonnaise. Much like potato salad or coleslaw in its use, it is often served as a side dish to barbecue, fried chicken, or other picnic style dishes. Like any dish, national and regional variations abound but generally it is prepared with raw diced onions, dill or sweet pickles and celery and seasoned with salt and pepper.
In Australia, and New Zealand it is commonly known as pasta salad which is usually made with cooked shell pasta pieces and brought from supermarket delis.
In the Philippines, macaroni salad has a mildly sweet flavor. Chicken is more often used in the dish. It is served in parties and gatherings.
In Puerto Rico macaroni salad may contain mayonnaise, mustard, can tuna or bits of SPAM, onions, Cubanelle peppers and pimentos.
In Hawaii, macaroni salad is a popular staple in plate lunches.