In a bamboo steamer clouded with vapor, delicate parcels sit in neat rows, their translucent skins glistening. Pick one up with chopsticks — carefully — and you’ll see liquid sloshing inside. Bite too eagerly and you’ll scald your chin. This is a dumpling that contains its own soup, and making it is an act of engineering as much as cooking. What’s hiding in that steamer?
- 1These originated in a town outside a major Chinese port city in the late 19th century
- 2The wrapper must be thin enough to be translucent but strong enough to hold liquid without tearing
- 3The soup inside starts as solid gelatin made from pork bones — it melts into liquid as it steams
- 4Each one is pinched closed with exactly 18 folds at the top, if the chef is doing it properly
- 5You eat it on a spoon with a splash of black vinegar and slivers of ginger
Xiaolongbao were invented in Nanxiang, a suburb of Shanghai, in the 1870s by a restaurant owner looking to distinguish his steamed buns from the competition. His innovation was adding aspic — chilled, jellied pork stock — to the filling. When steamed, the gelatin melts into a scalding, savory soup trapped inside a paper-thin wrapper. The technique spread to Shanghai and eventually the world, with Din Tai Fung turning it into a global phenomenon. Purists insist that the 18-fold pleat at the top isn’t decoration — it’s structural engineering that distributes tension evenly across the wrapper.
- 300g pork mince (not too lean — you need the fat)
- 2 tbsp soy sauce
- 1 tbsp Shaoxing wine
- 1 tsp sesame oil
- 1 tbsp ginger, finely grated
- 2 spring onions, finely chopped
- 200g pork aspic (jellied pork bone stock, chilled and cubed)
- 250g all-purpose flour
- 120ml boiling water
- Black vinegar and ginger slivers for dipping
- Make the aspic a day ahead: simmer pork bones and chicken feet with ginger and spring onion for 4–6 hours. Strain, season with salt, and chill in a flat tray until set firm. Cut into small cubes.
- Mix pork mince with soy sauce, Shaoxing wine, sesame oil, ginger, and spring onions. Fold in the cubed aspic gently — don’t crush it.
- Make the dough: pour boiling water into flour gradually, mixing with chopsticks. Knead for 10 minutes until smooth. Rest for 30 minutes covered.
- Divide dough into 24 pieces. Roll each into a thin circle, thinner at the edges than the center — this gives the pleats material to work with while keeping the bottom sturdy.
- Place a tablespoon of filling in the center. Pleat the edges closed, twisting at the top. Aim for 18 folds if you’re feeling ambitious.
- Line a bamboo steamer with parchment or cabbage leaves. Place the dumplings with space between them — they expand.
- Steam over rapidly boiling water for 8–10 minutes. Serve immediately in the steamer with black vinegar and ginger. Bite a small hole first, sip the soup, then eat the rest.
Did You Know?
The Taiwanese restaurant chain Din Tai Fung, which turned xiaolongbao into a global obsession, was originally a cooking oil shop that pivoted to dumplings when its oil business declined in the 1970s. Their Shanghai location reportedly produces over 100,000 xiaolongbao per day. The restaurant is so precise about quality that each dumpling must weigh exactly 21 grams with exactly 18 folds — trainees practice for months before they’re allowed to serve customers.
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