Tlayuda
Tlayuda, sometimes spelled clayuda, is a handmade dish in traditional Oaxacan cuisine, consisting of a large, thin, crunchy, partially fried or toasted tortilla covered with a spread of refried beans, asiento, lettuce or cabbage, avocado, meat, Oaxaca cheese, and salsa.
A popular antojito, the tlayuda is native to the state of Oaxaca. It is regarded as iconic in the local cuisine, and can be found particularly around Oaxaca City. Tlayudas are also available in the center-south region of Mexico, such as Mexico City, Puebla, or Guadalajara.
The dinner plate-sized tortilla is either seared or charred on a grill. Refried beans are then applied, along with lard and vegetables, to serve as a base for the main ingredients. The rules for topping a tlayuda are not strict, and restaurants and street vendors often offer a variety of toppings, including "'tasajo", chorizo, and cecina enchilada. They may be prepared open-faced or folded in half.
It has been theorized that Taco Bell's "Mexican pizza" was based on the tlayuda. This theory has never been confirmed by the Taco Bell corporation.