P
Chinese
Sichuan Hot and Sour Soup (Suan La Tang)
A clear chicken or pork stock-based soup thickened with cornstarch, acidified with Chinkiang black vinegar, and seasoned with white pepper and Sichuan pepper — containing silken tofu, wood ear mushrooms, dried lily flowers, bamboo shoots, and egg flowers (beaten egg dropped into the simmering soup and stirred into threads). Dunlop's version in *Every Grain of Rice* is a precise restoration of the restaurant standard — its sourness from Chinkiang vinegar (darker, more complex than rice vinegar) and its specific texture (cornstarch-thickened to a light, silk-like consistency) distinguish it from the Western-adapted versions.
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I
The Market List
The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.
1.2 litres
chicken or pork stock
clear, well-seasoned
Not yet stocked in British Columbia
200 g
20 g
20 g
dried lily flowers (golden needles)
soaked, hard tips removed, tied in knots if desired
Not yet stocked in British Columbia
60 g
1
egg
lightly beaten
Your own market
For the thickening
45 ml
cornstarch
dissolved in an equal volume of cold water (2–3 tablespoons)
Origin · ChinaWismettac · Vancouver →
For the seasoning
45 ml
Chinkiang black vinegar (zhenjiang cu)
added off heat; adjust to taste
Not yet stocked in British Columbia
1 tsp
ground white pepper
Your own market
0.5 tsp
ground Sichuan pepper
Not yet stocked in British Columbia
salt
to taste
Your own market
Each tap is counted, so the stockist sees the demand Provenance sends them.
II
The Method
1
Bring the stock to a steady simmer in a medium saucepan. Add the wood ear mushrooms, lily flowers, and bamboo shoots. Simmer briefly until the vegetables are heated through — the stock should remain clear and lightly fragrant.
2
Add the silken tofu strips and stir gently to distribute without breaking them. Return the soup to a bare simmer.
3
Give the cornstarch slurry a stir to re-suspend it, then pour it into the simmering soup in a thin, steady stream, stirring continuously. The soup thickens within seconds to a light, slightly viscous consistency — it coats a spoon in a thin, silk-like film but flows freely. Stop adding slurry at that point; too far and the texture becomes gluey.
4
Reduce to the gentlest possible simmer — the surface should show only the faintest tremor, no vigorous bubbling. Pour the beaten egg in a thin, continuous stream from a height while stirring the soup slowly in one direction. The egg sets immediately into long, fine threads — egg flowers (dan hua). If the threads are delicate and separate, the temperature was correct. Chunky, scrambled pieces indicate the heat was too high.
5
This is where the dish lives or dies. Remove the pan from the heat. Add half the Chinkiang black vinegar, stir, and taste. The sourness must be immediately assertive — the dominant register from the first spoonful, with white pepper heat following at once and the stock's savouriness as the foundation beneath both. Add more vinegar as needed to reach that assertive, perceptible sourness. Add the white pepper and Sichuan pepper, adjust salt. The vinegar's aromatic complexity — darker and more complex than rice vinegar — is only preserved by adding it off the heat.
From the canon — Sichuan pepper — hua jiao (flower pepper) — is not pepper at all but the dried husk of the berry of the prickly ash tree (Zanthoxylum simulans or Z. Sichuan Pepper (Hua Jiao): Toasting, Grinding, and the Ma Experience →
III
Quality Hierarchy
01
Reserve — Homemade clear pork or chicken stock, reduced to a clean intensity; Chinkiang vinegar from an aged, reputable producer (the full aromatic complexity is the point); freshly ground Sichuan and white pepper.
02
Estate — A good commercial Chinkiang black vinegar (zhenjiang cu) — check that it is black rice vinegar, not a substitute; fresh silken tofu from a Chinese grocer; wood ear mushrooms and lily flowers soaked from dried.
03
Market — A well-seasoned commercial chicken stock (low-sodium preferred); packaged silken tofu; cornstarch slurry carefully controlled to avoid over-thickening.
04
House — Any clear stock at hand. Do not substitute rice vinegar for Chinkiang — the aromatic character that defines this soup's sourness is absent in rice vinegar. Do not over-thicken.
IV
Sensory Tests
◇Sight. The cornstarch-thickened soup coats the back of a spoon in a light, silk-like film — flowing freely but with perceptible body; not watery, not gluey.
◇Sight. The egg flowers are long, fine, separate threads suspended in the soup — not large, chunky, scrambled pieces.
◇Smell. After the vinegar is added off heat, the soup carries a complex, slightly sweet, deeply soured aroma — the distinctive character of Chinkiang, not the flat sharpness of plain acid.
◇Touch. The soup moves with a light viscosity when the bowl is tilted — it flows, but with a coherent, silk-like resistance.
◇Where it lives or dies. The Chinkiang black vinegar must be added off heat and in sufficient quantity that its sourness is the dominant, immediately perceptible register of the soup from the first spoonful.
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VI
What to Pour
A light, off-dry Riesling or a cold Shaoxing rice wine — both have the acidity and faint sweetness to run alongside the Chinkiang vinegar's dominant sourness without being overwhelmed by white pepper heat. A pale lager serves the same function at the table.
The whole pairingPillar VII
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Where the dish comes from and how it came to be — on every recipe.
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Sourced through Provenance