Christopher Kimball travels to Mexico City to find new favorite weeknight suppers. He meets with Chef Esmeralda Brinn, who shows him Mexico's version of a meatball. Back in the kitchen, Milk Street Cook Catherine Smart teaches Chris to make Chicken Tinga (Tinga Poblana de Pollo), shredded chicken in a smoky tomato sauce that's an excellent filling for tacos. Then, Milk Street Cook Lynn Clark makes egg-stuffed Mexican meatballs with salsa roja in a flavorful chipotle sauce.