Northern China, at least 1,800 years of documented history. The crescent shape is said to resemble yuan bao (ancient Chinese gold ingots) — eating jiaozi at New Year brings wealth. Every Northern Chinese family has its own recipe, passed through generations.
Chinese jiaozi are the dumplings of Chinese New Year — pork and nappa cabbage wrapped in a thin wheat flour skin and either boiled (shui jiao), pan-fried (guo tie/potstickers), or steamed (zheng jiao). The filling must be seasoned aggressively — dumplings need to season their own dough skin from the inside. The wrapper should be thin at the body and slightly thicker at the pleated edge.
Chinkiang black vinegar and chilli oil as the dipping sauce — the sharp, almost smoky vinegar is the canonical dipping agent. For a beer: Yanjing or Harbin lager. For a spirit: Er Guo Tou.
{"Dough: 300g all-purpose flour, 150ml just-boiled water — a hot-water dough produces a more pliable, tender wrapper than cold-water dough. Rest 30 minutes covered","Filling: 300g ground pork (30% fat), 200g nappa cabbage (salted for 10 minutes, then squeezed dry), 2 tablespoons soy sauce, 1 tablespoon sesame oil, 1 tablespoon Shaoxing wine, 1 teaspoon ginger, spring onion, white pepper","The filling must be well-seasoned: taste a small amount fried in a pan before wrapping — the flavour should be assertive","Rolling: roll each wrapper to 1mm thin at the centre, slightly thicker at the edge — the edge must hold the pleats without tearing","The pleat: hold the filled wrapper in one hand, use the other hand to make 5-7 pleats along one edge, pressing firmly toward the centre — the pleats create a structural arch that allows the dumpling to stand upright","For boiled jiaozi: cook in simmering (not vigorously boiling) water — a vigorous boil tears the wrappers"}
The moment where jiaozi lives or dies is the sealing pressure — the pleated edge must be pressed firmly enough that no gap remains, but not so firmly that the wrapper tears. Run a wet finger along the edge before pressing if the dough has dried out. The test: hold a raw dumpling underwater for 10 seconds — if it holds its seal, the wrapping is correct.
{"Wet filling: squeeze the cabbage thoroughly — water in the filling steams the wrapper from the inside","Thin wrapper edges: the edges tear during pleating and the dumpling opens during cooking","Under-seasoned filling: the flavour diminishes further during boiling — season boldly"}