A similar story of a classic Mexican dish surrounds Nachos. A spur of the moment invention during WWII by a Piedras Negras (just across the Rio Grande from Eagle Pass TX) restaurant owner named Ignacio. Allegedly he was the first to come up with the idea of fried corn tortilla chips, and the original Nachos were just melted cheese on tortilla chips.

BTW, Piedras Negras translates as "Black Rocks" an allusion to the large coal mines that once operated in that area.