Pan Bagna

In Provence, especially Nice, pan bagna (or bagnat) is a street food that can easily be turned into this hors d’oeuvre. The name pan bagna, which means something like “bathed bread,” implies that the bread becomes soaked, which it does. It is a curious method: a roll is stuffed with tomatoes, olives, garlic, fresh fava beans, and sometimes canned tuna, and all this is sprinkled with olive oil and vinegar. The roll is closed up, then it rests under a weight that flattens it considerab