Tripe simmered for hours until tender in tomato sauce with mint, garlic, and pecorino. The meat is buttery and absorbs the bright tomato flavor. Sergio sources the tripe from quality suppliers and cooks it overnight. Served in a warm, crusty roll that soaks up the sauce.
Tips from diners
If you've never had trippa, start here. Sergio's version is tender and balanced—not overly gamey. Ask for extra sauce to soak the bread.
Beef braised with tomatoes, onions, and red wine until tender and rich. The sauce clings to the meat and soaks into the bread. This is comfort food made by someone who knows how to coax flavor from modest cuts. Less adventurous than the offal options, but equally delicious.
Tips from diners
The ratio of meat to sauce is perfect. Don't let the sauce intimidate you—the crusty bread is designed to absorb it.
A thick slice of tender meatloaf made with ground beef and pork, simmered in tomato sauce and served in a warm roll with a few slices of melted mozzarella. It's hearty and fills you completely. Not as adventurous as the other options, but satisfying.
Tips from diners
This is the gentlest introduction to Mordi e Vai if you're not ready for tripe or offal. It's still made with Sergio's skill and overnight braising.
Coratella is the heart, lungs, and liver of lamb or veal, sautéed with spring artichokes, white wine, and rosemary. It's rich and assertive. When in season, the artichokes brighten the deep meat flavors. This is Roman cooking at its most traditional.
Tips from diners
This is less widely available at other stalls—Sergio's reputation means he sources the best coratella. Worth trying at least once.
Oxtail that has braised overnight becomes fall-apart tender. The sauce is deep from hours of slow cooking with celery, tomato, and wine. The meat shreds easily inside the panino. This is one of Rome's most demanding dishes to prepare, and Sergio does it properly.
Tips from diners
Sergio's background as a butcher means he selects the best oxtail cuts and breaks them down perfectly. You're eating the result of decades of skill.
Mordi e Vai ('bite and run') is a market institution run by Sergio Esposito, a former butcher who transforms his knowledge into the city's most sought-after sandwiches. Open only during market hours in the Testaccio food hall, he fills crusty rolls with tripe, oxtail, coratella, and braised beef—all slow-cooked overnight. There's no seating; locals queue at lunch and grab them to eat standing.
Mordi e Vai only operates during Testaccio Market hours: 7 AM to 2 PM, Monday to Saturday. The market closes Sundays. Arrive by 13:00 for the full selection.
Go right at 7 AM opening or after 14:00 doesn't exist (they close). Lunch (12:00-13:30) is when locals eat—expect a queue out the door. You'll wait 15-20 minutes.
Sergio speaks limited English but is friendly. Point at what you want and ask for extra sauce. There's no seating—eat standing around the market or find a nearby table.
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