Tlayudas
The tlayuda is the late-night street food of Oaxaca City: a huge, thin, slightly leathery corn tortilla spread with black bean paste and asiento (unrefined pork lard), scattered with quesillo (Oaxaca string cheese) and cabbage, folded and toasted over charcoal until crisp and smoky. This vegetarian version swaps the asiento for browned butter, which gives the same toasty richness, and is topped with avocado, tomato and salsa. Real tlayudas are about 30 cm across and hard to find outside Oaxaca; use the largest corn tortillas you can get, or flour tortillas of 25 cm (then they are not gluten free). Quesillo is made with animal rennet in Oaxaca; for a vegetarian dish use low-moisture mozzarella or a string cheese made with vegetarian rennet. Chef's tip: spread the beans thinly; a thick layer makes the tortilla soggy and stops it crisping.






