Over the past decade and more, Taiwanese foods that have become world famous include not only bubble tea and the xiaolongbao (broth-filled steamed pork dumplings) of the Din Tai Fung restaurant chain but also gua bao. This food, whose Mandarin name is based on its Taiwanese pronunciation, kuah-pau, features delicious pork wrapped in a steamed bun. Its half-open serving style allows scope for all kinds of creative ideas. Are you familiar with it?