Xiaolongbao

Xiaolongbao (xiǎolóngbāo, literally 'small basket buns') are the dish most associated with Shanghai internationally, though their origin is the suburb of Nanxiang, where a teahouse operator named Huang Mingxian is credited with their development in the 1870s. They arrived in the city proper as the suburbs were absorbed into Greater Shanghai.

The defining technical feature is the soup inside: the filling is minced pork combined with chilled pork-skin aspic (the collagen-rich liquid from simmered trotters or skin, set cold and diced). When the dumplings are steamed, the aspic melts back into broth, creating a small pool of hot liquid trapped within the still-intact skin. Achieving this without the skin bursting — and without the filling leaking before the aspic re-melts — requires precise dough hydration, a specific thickness (thin enough to remain translucent, thick enough to hold), and consistent pleating.

The pleats themselves are diagnostic: traditional producers fold a minimum of 18 pleats per dumpling, and competitions among dim sum chefs are based on pleat count and uniformity. Machine-pressed skins are thicker and less refined.

The correct eating sequence: place the dumpling on a ceramic spoon, puncture a small hole with teeth or chopstick to release steam, sip the broth, then eat the remainder dipped in black rice vinegar and fine ginger shreds. Biting directly into an intact xiaolongbao while it is hot typically ends in scalded mouth.

Variants include a crab-pork version (xiè fěn xiǎolóngbāo) available in autumn when hairy crab is in season — considerably more expensive and more richly flavoured.