Use leftover Roast Pork a la Criolla for this sandwich if you have any. This sandwich is a favorite in Miami, Florida, as it was first made by the Hispanic community there. Since it is eaten in the wee hours, after an evening of dancing and music, the Cuban Sandwich is sometimes known as "Medica Noche" (midnight), especially when made on the soft, sweet egg sandwich roll available from Cuban bakeries.
Split a Cuban or a submarine roll in half lengthwise; spread each roll half with prepared mustard and layer sandwich with one ounce each thinly sliced roast pork, Swiss cheese and deli ham; add sliced dill or bread and butter pickles and close sandwich. Lightly butter outside surface of roll and grill on a hot griddle or in a 400 degree F oven until lightly toasted and cheese is melted.