Taipei's most celebrated Shanghai-style dumpling shop (the New York Times once called it one of the 10 best restaurants in the world) is now a worldwide franchise. This is the place that started it all and daily meal-time line-ups attest to an enduring popularity. Try the classic xiǎolóng bāo (小籠包; steamed pork dumplings), done to perfection every time. Take exit 5 from Dongmen MRT.
There are branches in the Taipei 101 food court, the SOGO food court under Zhongxiao-Fuxing MRT and Zhishan.