Most people have heard of a torta—one of the traditional sandwiches of Mexico—but the cemita is its own unique breed of Mexican sandwich, wildly popular in Puebla, and named after the city’s or the region’s signature round, soft sesame buns by the same name. In Mexico you will see cooks piling them high with breaded chicken, lengua (tongue), or spit-roasted pork. Often cemitas feature chipotle, Oaxacan cheese, and pápalo, a minty green that tastes something like a cross between arugula and cilantro. (I made it optional in this recipe because it can be hard to find fresh.)
