Shanghai, Jiangnan region. Invented in the Nanxiang district of Shanghai in the late 19th century at the Nanxiang Mantou Dian restaurant, which still operates today. The word xiao long means small bamboo steaming basket; bao means bun. Shanghai's Din Tai Fung chain brought the dish to global attention.
Xiao long bao (Shanghai soup dumplings) contain both filling and hot broth inside a thin, plisséd wrapper. The soup is not added as a liquid — it is added as a pork-gelatin aspic that melts during steaming, producing the characteristic burst of hot broth at the first bite. They are the most technically demanding Chinese dumpling. The wrapper must be thin enough to see the filling through it, yet strong enough to hold the broth without bursting.
Chinkiang black vinegar and fine-shredded ginger — not as condiment but as structural: the vinegar's acidity brightens the fatty pork broth and the ginger's heat cuts through the richness. Dragon Well (Longjing) green tea from nearby Hangzhou is the tea accompaniment.
{"The aspic (pork gelatin): pork trotters and chicken carcasses simmered for 4-6 hours to extract collagen, then strained, the cooking liquid chilled to a firm gel. This gel is diced and mixed into the filling — it melts to liquid during the steaming process","The wrapper: hot-water dough (50% boiling water + 50% cold water) for pliability, rolled to 1mm or thinner — the dumpling should be translucent when held to the light","Filling: seasoned pork shoulder mince (30% fat) mixed with diced aspic, soy sauce, Shaoxing wine, sesame oil, and ginger","The pleat: 18-20 pleats minimum around the top of the dumpling, twisted and sealed to a tight point — more pleats indicate higher skill","Steam in a lined bamboo steamer for exactly 8 minutes at high heat — the steam melts the aspic and cooks the wrapper without overcooking the pork","Eat in a Chinese soup spoon: lift the XLB into the spoon, bite a small hole in the top, sip the soup first, then consume the dumpling"}
The moment where XLB lives or dies is the eating technique — a xiao long bao eaten incorrectly (bitten through from the top) releases all the hot soup onto the tongue in a scalding burst. Correct: place the XLB in a Chinese soup spoon, bite the side of the wrapper gently to make a small hole, allow the soup to flow into the spoon, add a few drops of Chinkiang vinegar and shredded ginger, then consume the whole spoon — wrapper, filling, and soup together.
{"Thick wrappers: the XLB will be doughy and the broth proportion will be wrong","Not enough aspic: insufficient gel means insufficient broth in the finished dumpling","Over-steaming: the wrapper tears, releasing the broth into the steamer"}