Mordi e Vai ★ 4.6
Mordi e Vai in the Mercato di Testaccio in Rome sells Sergio Esposito's slow-braised allesso di scottona (beef shoulder) sandwich for €5, the city's defining.
Try: Roman braised-meat sandwich
Tip: Closed Sunday all day. The allesso di scottona with chicory is 5 euros; queue forms 12:30 onward.