"Porto is still a city full of working-class restaurants, known as tascos. Opposite Praça de Carlos Alberto, Casa Expresso has hung on for decades serving the same dishes: beef liver with onions, deep-fried cod escabeche, and daily specials accompanied by boiled potatoes and fresh salads. Order a pitcher of the house wine to wash down your meal. Must-try dish: Rojão sandwich, chunks of pork marinated in garlic and white wine, served in a crusty roll, is one of the city’s most iconic bites." - Rafael Tonon