Corn chip
A corn chip or tortilla chip is a snack food, of which maize (corn) is the main ingredient, as well as vegetable oil, salt and water. The original recipe has its origins in Mexico in fried tortilla chips. Although now available worldwide, the United States is one of the main markets for corn chip products. Commercial brand names for corn chips (marketed as tortilla chips) are Doritos and Tostitos.
Corn chips are the quintessential and often free appetizer in Tex-Mex restaurants and are served with a salsa or other dip. Quite commonly, the chips may be served in "nacho" form, where the corn chips are assembled in a dish with toppings such as sour cream, salsa or pico de gallo, melted cheese and guacamole.
Potato chips or crisps are one of the main competing snack foods. In the U.S., the term corn chip usually refers not to tortilla chips but to reprocessed corn snacks like Fritos.