If the francesinha has a rival in the hearts of Porto's snackers, then it is the roast pork sandwiches (sandes de pernil) produced in this retro hole-in-the-wall place near the São Lázaro gardens. The meat is tender, marinated in a secret sauce served with the roasting juice in a fist-sized bread roll. There's a luxury version that comes with an added dose of creamy queijo da serra sheep's cheese. The accompaniment of choice is a glass of cold vinho verde (the crisp white wine of northwest Portugal) or a dark beer. There are a number of alternatives where the rolls are filled with smoked sausage or ham. Eat at the bar, in the street, or on the little sidewalk terrace in summer.