A tortilla chip is a snack food made from corn tortilla, which are cut into triangles and then fried or baked. Corn tortillas are made of nixtamalized corn, vegetable oil, salt and water. Although first mass-produced commercially in the U.S. in Los Angeles in the late 1940s, tortilla chips grew out of Mexican cuisine, where similar items were well known, such as totopos and tostadas.

A snack is a small portion of food generally eaten between meals. A snack is often less than 200 calories, but this can vary. Snacks come in a variety of forms including packaged snack foods and other processed foods, as well as items made from fresh ingredients at home.