"There are few combinations more indulgent than coffee and chocolate—luckily, Bettina & Niccolò Corallo, a hole-in-the-wall shop in Príncipe Real, specializes in both. The owners originally sourced all their coffee beans from São Tomé and Príncipe, but today they offer a range of excellent single-origin beans and brews from Central America, South America, Africa, and Southeast Asia. Everything is roasted in-house, and each espresso comes with a complimentary piece of chocolate." - Todd Plummer