Wuxi oil-gluten balls trace their origin to a Buddhist nunnery at the foot of Huishan during the Qing Xianfeng period (1851–1861), where a cook deep-fried leftover raw gluten to prevent summer spoilage and discovered the puffs expanded into hollow golden spheres. By the late Qing, the North Gate's Ma Chengmao Gluten Shop (马成茂面筋店) began large-scale commercial production, making oil-gluten widely available. Home cooks began stuffing the hollow spheres with seasoned pork mince, and by the Republican period 肉酿面筋 was firmly established as one of Wuxi's signature home dishes.
The gluten shell has spent time drinking in the braise — it yields with a soft pull, releasing a rush of soy-sweet sauce; then the pork filling reveals itself, mildly sweet in the characteristic Wuxi style, fragrant with scallion and ginger.
Raw gluten (生麸) is a viscoelastic protein network of glutenin (elasticity) and gliadin (extensibility). When a small ball is dropped into oil at around 180 °C, the surface proteins denature and set almost instantly. Water trapped inside converts to steam and inflates the gluten network like a balloon, expanding the ball to three or four times its original volume within seconds to form a rigid, hollow shell. During braising, this hollow structure acts as a sponge: capillary action and osmotic pressure draw the soy-sugar-wine cooking liquid through the porous gluten network, saturating the sphere with the sweet braise.
Variations
Vegetarian versions skip the pork and fill the puffs with a mixture of fresh shiitake, preserved vegetables, and glass noodles. Some Wuxi restaurants add wood-ear mushroom and water chestnuts to the pork filling for textural contrast.
On the Palate
Where Pork-Stuffed Gluten Puffs sits in the Chinese flavor cloud
Ingredients
Serves 4
How it's made
7 steps · 30 min active + 20 min waiting
- 15 min
Pierce a small hole in the side of each Wuxi oil-gluten ball using a chopstick or scissors, leaving the rest intact.
- 28 min
Season minced pork with soy sauce, sugar, rice wine, sesame oil, ginger, and scallion; stir vigorously in one direction until the mixture becomes sticky and cohesive.
Watch outStir the pork one direction until it turns sticky and cohesive — a loose filling crumbles out through the hole during braising.
- 35 min
Use a chopstick to stuff about 20 g of filling into each puff through the hole; press firmly and pinch the opening nearly shut.
- 42 min
Heat oil in a wok over medium heat; add scallion and ginger and sauté until fragrant.
- 53 min
Add the stuffed gluten balls and turn gently; pour in soy sauce, sugar, rice wine, and enough water to nearly submerge the puffs.
- 615 min
Bring to a boil, then reduce to low heat; braise covered for 15 minutes, turning the puffs once halfway through.
Watch outBraise low with the liquid nearly covering the puffs — the hollow gluten drinks the sauce in like a sponge; too little liquid and the centers stay dry.
- 75 min
Uncover and increase heat to reduce the sauce to a glossy glaze; drizzle with sesame oil and serve.
Watch outReduce at the end to a glossy glaze that clings — a thin sauce slides off and leaves the puffs pale and underflavored.
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