5 hr including jelly and rising, about 1 hr hands-on · 16 buns, 4 people
Photo: Metaphox (CC BY 2.0) via Wikimedia Commons · source
A yeasted soup dumpling fried in a covered pan: steamed on top, crackling on the bottom, with sesame and scallion scattered over. Shanghai's breakfast.
For the jelly: 200 ml (3/4 cup) strong chicken stock plus 2 tsp powdered gelatin
For the dough: 250 g (2 cups) all-purpose flour
3 g (1 tsp) instant yeast
1 tsp sugar
1/2 tsp baking powder
140 ml (1/2 cup + 1 tbsp) warm water
For the filling: 300 g (2/3 lb) ground pork, 25% fat
1 tbsp light soy sauce
1 tbsp Shaoxing wine
1 tsp sugar
1/2 tsp salt
1/4 tsp white pepper
1 tsp sesame oil
1 tsp grated ginger
To fry: 3 tbsp neutral oil, 120 ml (1/2 cup) water, 1 tbsp toasted sesame seeds, 2 scallions, thinly sliced
To serve: black vinegar and chili oil
How to make it
Set the jelly (2 hr): Heat the stock, whisk in the gelatin until dissolved, pour into a small dish and chill until firm.
Make the dough (10 min, plus 1 hr rise): Mix flour, yeast, sugar and baking powder, add the warm water and knead 8 minutes until smooth. Cover and leave in a warm spot until doubled, about 1 hour.
Make the filling (10 min): Stir the pork with soy, wine, sugar, salt, pepper, sesame oil and ginger in one direction until sticky, 2 minutes. Dice the jelly into small cubes and fold in. Chill until you wrap.
Shape (25 min): Punch the dough down, roll into a rope and cut 16 pieces. Roll each into a 9 cm (3 1/2 in) circle, thicker in the middle. Fill with a heaping tablespoon, pleat shut like a xiao long bao and pinch firmly. Set pleat side down on a floured tray, cover and rest 15 minutes.
Fry (12 min): Heat the oil in a large heavy nonstick or cast-iron skillet with a lid over medium. Set the buns in, pleat side down, 1 cm apart. Fry 2 minutes until the bottoms start to color.
Steam in the pan (8 min): Pour in the 120 ml water (stand back, it spits), cover tightly and cook over medium for 7 to 8 minutes until the water is gone and you hear frying again.
Crisp and finish (2 min): Uncover, scatter sesame and scallions, and fry 1 to 2 minutes more until the bottoms are deep golden and crisp; lift one with a spatula to check. Serve straight from the pan, warning everyone to bite a small hole and sip first.
Tips
A heavy lid matters: steam escaping means pale tops and burnt bottoms.
Pleat side down gives the classic smooth dome; pleat side up is fine too and shows off your folds.