A leftovers dish is a meal made from the food that was not eaten during a previous meal. The two most common leftovers dishes are HASH and OLIO. HASH is a dish of diced or chopped meat, potatoes, and onions that are cooked together and served with gravy. OLIO is a stew-like dish made from a variety of ingredients such as vegetables, beans, and meats. Both dishes are popular ways to use up leftovers and can be served as a main course or side dish.