Tortilla chips are the quintessential and often complimentary appetizer in Tex-Mex and Mexican restaurants in the U.S. and elsewhere. Their popularity outside of California saw a steady rise in the late 1970s when they began to compete with corn chips, the dipping chip of choice during the first three quarters of the 20th century. They are typically served with a dip, such as salsa, chile con queso, or guacamole.