This is the best-known gastronomical fast food, which can be enjoyed at any time of the day, even as a midnight feast, when you feel peckish. You can add an anchovy flavour if you like, using either anchovy fillets in oil or a salted anchovy sauce sold as colatura (and probably very similar to the Ancient Roman fish sauce, garum). Considered to be an aphrodisiac, this dish is known all over Italy.