Sometimes I want it all: A clean house and a lazy weekend. A good night’s sleep and a Doctor Who marathon. Salad and pizza. Mexican and Italian food. I might not be able to balance out the former two, but as for the latter? Yes and yes.  The biggest tortilla in town. Tlayuda is Mexico’s answer to pizza. But don’t expect tomato sauce and basil leaves. This popular Oaxacan street food is made on an enormous tortilla and spread thickly with black beans (Take note: these aren’t ordinary black beans – they’ve been blended with a heaping of roasted garlic and onion, cumin, and chile powder). Purists will spread the tortilla with lard, too – though I prefer a light brush of vegetable oil. Finally, cheese is sprinkled on top, as is your choice of meat (beef, pork, or browned chorizo) and a garden’s-worth of toppings (think avocado, tomato, cheese, cilantro, lettuce, and jalepenos). It can be served open-faced or folded in half. When the first hot bite passes your lips, be prepared for a flavor explosion –  especially when you add a puckering of freshly …