Tlayuda Clásica con Tasajo de los Valles Centrales

This is Oaxaca's dish. Valles Centrales. If you have walked through the Mercado 20 de Noviembre in Oaxaca city, you have seen the senoras at the pasillos de carnes asadas grilling tasajo over mesquite coals, the smoke thick enough to taste from across the hall. The tlayuda is what that tasajo goes on, and it is not a tortilla in the way the rest of Mexico understands the word.

The tlayuda tortilla is 30 to 40 centimeters across, made from a coarser grind of nixtamalized corn, and dried on the comal until it turns leathery and stiff. That stiffness is the point. It is the plate, the structure, the thing that holds everything without collapsing into your hands. When you heat it over coals or on a comal, the edges char and the center stays pliable enough to fold. If your tortilla is soft and floppy, you do not have a tlayuda. You have a quesadilla grande.

The spread is asiento, not butter, not oil, not even regular manteca. Asiento is the dark, grainy sediment that settles at the bottom of the pot when you render pork lard slowly. It tastes like smoke and pork and the comal it was made on. Over that goes a layer of refried black beans cooked with hoja de aguacate, the toasted avocado leaf that gives Oaxacan beans their anise-like perfume. Then quesillo pulled into strings, then tasajo off the grill, then shredded lettuce and roasted chile de agua. Cada estado, su propia cocina. This one is Oaxaca's and nobody else's.

My mother did not make tlayudas. She was jalisciense. But she had a page in her notebook where she had written, in her careful pencil: 'Tlayuda, Oaxaca, preguntar por asiento en el mercado.' She never made it, but she knew it mattered enough to write down. I made my first one in a market stall in Tlacolula de Matamoros, watching a senora who had been making them since before I was born. She did not measure anything. She spread the asiento by feel, folded the tlayuda in half, and set it directly on the coals. Saber cocinar es saber vivir.