Frito pie is a dish popular in the Southern, the Pacific Northwestern, and Southwestern United States, whose basic ingredients are chili, cheese, and corn chips (specifically Fritos). Additions can include salsa, refried beans, sour cream, and rice to jalapeños. There are many variations. Frito pie can be prepared in a casserole dish, but itinerant versions prepare it in a single serve fritos type corn chip bag with various ingredients as toppings. Variations on the dish made in a corn chip bag include pepper bellies, walking tacos, Frito boats, Texas Straw Hat and tacos in a bag. In Mexico, a similar type of dish is tostilocos.