Were does Pan Con Lechon Roasted Pork Sandwich come from?

Lechón is a traditional Cuban dish consisting of a whole roasted pig. The meat is typically served with congrí, a Cuban black bean and rice dish, and yuca con mojo, a cassava dish with a garlic-citrus sauce. Pan con lechón is a popular lechón sandwich that is made with Cuban bread and roasted pork. It is typically served with mojo sauce and pickled onions.