Panino con la porchetta is a popular type of sandwich from central Italy made with slices of porchetta that are tucked in between two slices of homemade bread. The sandwich is especially popular among Italian-Americans and in Rome, with both Umbria and Lazio claiming to be the birthplace of its main ingredient, porchetta.
Traditionally, no other ingredients are needed, as porchetta is very greasy and has lots of herbs and seasonings, which is also why homemade bread is preferred since it soaks up the fat from the meat well without falling apart. Also, the crispy skin on the porchetta should not be removed.