Before Disneyland opened in 1955, Frito-Lay’s founder Herman Lay wanted in on the action. Lay struck a deal with Disney to open a Mexican restaurant, Casa de Fritos, as part of the theme park’s experience. 

Enter Alex Foods, Casa de Fritos’ tortilla distributor. Owned by the Morales family, California immigrants from Sonora, Mexico, Alex Foods delivered ingredients to the restaurant for years. One day a salesman noticed stale tortillas in the garbage and told the kitchen they could salvage them by frying them up and serving them with seasoning. 

The salesman’s name is lost to history, but the idea itself wasn’t original. Doritos are a variation of the totopo, a tortilla that’s been fried, baked, or toasted. That nacho cheese dust, though? Yeah, that’s not a Doritos’ invention, either: James L. Kraft patented processed cheese in 1916, and with the help of Samuel Percy’s 1872 invention of spray-dried dairy products, cheese dust emerged. ... (Continue).