Step back in time at Yossou, a Nagasaki institution that has been perfecting its signature chawanmushi since 1866. Tucked away in the bustling Hamamachi shopping arcade, this charming restaurant welcomes you with a traditional atmosphere and the city's most celebrated savory egg custard. The chawanmushi here is a revelation—a silky, generous bowl filled with delights like eel, shrimp, and shiitake mushrooms. It’s a true taste of Nagasaki's culinary history and a must-try experience.