Cemitas are a type of mexcian sandwich that originally hails from the state of puebla, but they've taken on a life of their own in new york city. This recipe creates a cemita sandwich as served in the restaurants and taco trucks of new york, in particular along roosevelt avenue in jackson heights. These are gently warmed sandwiches served on a griddled sesame bun with taco-meat fillings of your choice, avocado, lettuce, tomato, chipotles, refried beans, mayo, and queso oaxaca, a mexican string cheese, that's hand-shredded into hairlike strands. Papalo, a floral mexican herb, adds its own special flavor. This is a cemita con todowith the works.