Overview: Christopher Kimball travels to Mexico City to learn favorite dinner recipes from cooking school instructor Esmeralda Brinn and Adriana Luna, chef at La Cocina de Mi Mamá in the Coyoacán market. Back in the kitchen, Chris prepares a layered Chicken, Salsa Verde and Tortilla Casserole (Pastel Azteca). Then, Milk Street Cook Lynn Clark makes Pork in Veracruz Sauce (Puntas a la Veracruzana), a skillet dish of thinly sliced pork with a tomato, olive and caper sauce.