A clear, tangy Chongqing braising-pot soup in which an aged duck is simmered for hours with sour pickled radish until the broth turns light, sharp and clean. The long-fermented radish cuts the richness of the old bird, leaving a soup that is mellow and savory with a bright sour edge — soothing rather than fiery, prized for easing autumn dryness. The duck meat goes soft and fragrant, the radish slips between tender and crisp, and the broth is the whole point.
Pickled-Radish Old-Duck Soup is a classic of Chongqing-Sichuan home cooking that rose to wide popularity in the 1990s, though its two components are far older: Sichuan's craft of pickling radish in brine runs deep, and the sour radish of Zhutuo in Yongchuan is said to go back more than two centuries. A folk story tells of a hauler's wife at Chongqing's Chaotianmen docks who, with her husband worn down by years of labor, stewed their long-kept old duck with some sour radish into a fragrant, restoring pot — a tale told as legend rather than fact. What is certain is the logic of the dish: an aged, fatty bird and a sharp, long-fermented pickle balancing each other in a clear simmer.
A clear, pale broth with the unmistakable sour lift of fermented radish rising off it — refreshing, never greasy. The old duck has given hours to the pot, so its meat pulls soft and fragrant from the bone and its richness has melted into the soup, then been cut clean by the radish's acidity. The pickled radish itself sits between tender and crisp, salty-sour and saturated with the duck. A few Sichuan peppercorns and slices of ginger keep any gaminess at bay; the soup is warming and gentle, the antidote to a heavy, spicy table.
The dish lives on two slow processes. First the radish: white radish is salt-brined and fermented for months — the longer and sourer the better — so lactic-acid bacteria build the clean, deep acidity that defines the soup. Then the simmer: the duck is blanched with ginger, scallion and a little wine to draw off blood and gaminess, then simmered low and long, usually in a clay pot, so collagen slowly melts into the broth and the fat emulsifies into a light body rather than a greasy slick. The radish goes in to cook down with the duck; its acid balances the bird's richness and keeps the broth tasting clear and bright. No thickening and almost no chili — the whole flavor is duck, sour radish, ginger and time.
Variations
Some cooks add a few wild yam pieces, white pepper or konjac to the pot; ginger and Sichuan peppercorn are near-universal for cutting gaminess. The duck is ideally an older, leaner bird whose firmer flesh stands up to the long cook. Restaurant versions sometimes finish it as a hotpot base, the simmered duck-and-radish broth set bubbling at the table for cooking greens, mushrooms and tofu; others keep it strictly as a clear, slow-stewed soup served on its own.
On the Palate
Where Pickled-Radish Old-Duck Soup sits in the Chinese flavor cloud
Ingredients
Serves 4
How it's made
7 steps · 30 min active + 2 hours waiting
- 110 min
Chop the duck into pieces; rinse, then blanch in cold water with ginger, scallion and a splash of wine, skimming off the foam, and drain.
Watch outStart the duck in cold water and skim the grey foam as it rises — this draws out the blood and gaminess; skip it and the broth stays murky and off.
- 25 min
Rinse the pickled radish lightly and cut into thick slices or wedges; have ginger and a few Sichuan peppercorns ready.
- 35 min
Optionally sear the blanched duck briefly in a dry or lightly oiled pot to render some surface fat and deepen the aroma.
- 45 min
Transfer the duck to a clay pot, add plenty of water along with ginger and Sichuan peppercorn, and bring to a boil.
- 575 min
Lower to a gentle simmer and cook, partly covered, for over an hour until the duck is tender and the broth has body.
Watch outHold the broth at a gentle simmer over an hour until it turns milky with body — a hard boil renders the fat greasy instead of emulsifying it silky.
- 630 min
Add the pickled radish and continue simmering until the radish is soft-crisp and its sourness has worked through the broth.
Watch outGive the radish enough time to soften and let its sourness work through — undercooked, its acid sits on top instead of balancing the duck's richness.
- 72 min
Taste and adjust with a little salt only if needed; serve hot from the pot, broth first.
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