Why it belongs in ORBIS
A street food stall inside Mercato di Testaccio serving Roman-style sandwiches filled with traditional stewed meats — trippa alla romana (tripe), coratella (lamb offal), and picchiapò (boiled beef with tomato).
Mordi e Vai is Box 15 in the Mercato di Testaccio. Its soft ciabatta rolls are dipped lightly in broth before they are filled, so eat the sandwich at the stall rather than carrying it far.