A gloppy, meaty, cheesy brick served in a pool of sauce and with a mountain of fries: please meet the francesinha, the culinary pride and joy of the city of Porto. Today, restaurant billboards proclaim in many languages that they serve the best version in the world, revealing the genuine power of this artery-clogging combination that, incredibly, was originally conceived as a snack. We have to say it though: eating a francesinha is worth every last calorie. This dense sandwich, which is impossible to eat just with your hands, is often considered the lusophone version of the croque monsieur.

Matosinhos, a small city just north of Porto, is used to change. It has an industrial air to it, due to its 19th-century harbor, and its past prosperity was connected to the fish-canning sector, which peaked during World War II and declined from the beginning of the 70s. The numerous abandoned warehouses attracted nightlife during the 1990s, with clubs finding a fertile zone for noise. The completion of the long-delayed tidal pool, built by Portugal's starchitect, Alvaro Siza (who was born in the city), put it firmly on the map again after the project was delayed for decades. In January, the launch of the new, spiralling cruise ship terminal added to the contemporary design-y feel that has been developing on its otherwise rugged coastline.

The sensation of entering A Cozinha do Manel (“Manel’s Kitchen”) in Porto is so similar to entering grandma’s house on Sunday that it almost confuses us. There is no one to greet you at the door, no cloth napkins folded over employees’ arms. We walk confidently, as we would at home, with the sense of comfort that only intimacy is capable of inspiring. From the wall, among the many clocks, vintage plates and drawings made on cloth napkins by customers with an artistic bent, dozens of familiar faces look back at us. They are actors, musicians, politicians and soccer stars all standing next to Zé António, the owner and manager – a confirmation of the restaurant’s popularity.