While Pasteis de Belem gets a lot of press for being the original creators of the famed Portuguese tart, locals in the know may point you toward Manteigaria for an authentic, buttery tart that ages well for a few hours after even. The light, custard-filled Pastel de Nata are expertly made in front of your eyes (none of the secrecy of Pasteis de Belem) by white-coated chefs, and a ringing bell signifies that your hot batch is ready and waiting to be eaten with a bica (or Portuguese espresso). Perfect.