Chili mac is a standard dish in the U.S. military and is one of the varieties of Meal, Ready-to-Eat (MRE). A Frito pie or walking taco, as it is called at festivals and county fairs in the midwest, typically consists of a small, single-serving bag of Fritos corn chips with a cup of chili poured over them, often topped with grated cheese or onions and jalapeños and sour cream.[20] Frito pies are popular in the southwestern United States.