
Nachos originated in the city of Piedras Negras, Coahuila, Mexico, just over the border from Eagle Pass, Texas, at a restaurant called the Victory Club, owned by Rudolfo DeLos Santos. One day in 1943, the wives of 10–12 U.S. soldiers stationed at Fort Duncan in nearby Eagle Pass, were in Piedras Negras on a shopping trip, and arrived at the restaurant after it had closed for the day. The maître d', Ignacio "Nacho" Anaya, invented a new dish for them with what little he had available in the kitchen: tortillas and cheese. Anaya cut the tortillas into triangles, added longhorn cheddar cheese, quickly heated them, and added sliced jalapeño peppers. He served the dish, calling it nachos especiales, or "special nachos".
Anaya went on to work at the Moderno Restaurant in Piedras Negras, which still uses the original recipe. He also opened his own restaurant, "Nacho's Restaurant", in Piedras Negras. Anaya's original recipe was printed in the 1954 St. Anne's Cookbook. The popularity of the snack qiuckly spread throughout Texas. The first known appearance of the word "nachos" in English dates to 1949, from the book A Taste of Texas. Waitress Carmen Rocha is credited with introducing the dish to Los Angeles at El Cholo Mexican restaurant in 1959.
A modified version of the dish, with permanently soft cheese and pre-made tortilla chips, was marketed by a man named Frank Liberto beginning in 1977, during sporting events at Arlington Stadium in Arlington, Texas. During a Monday Night Baseball game, sportscaster Howard Cosell enjoyed the name "nachos", and made a point of mentioning the dish in his broadcasts over the following weeks, further popularizing it and introducing it to a whole new audience - From Wikipedia.org