P
Chinese · Chengdu, Sichuan
Sichuan Numbing Sour Fish (Suan Tang Yu)
Suan tang yu: Sichuan-influenced sour fish soup — a lighter, more elegant alternative to the fiery shui zhu yu. A whole fish or fish fillet poached in a sour-broth made from Pixian doubanjiang, tomato, pickled mustard, and fish stock. The sourness comes from the pickled vegetables and tomato — the heat from chili is secondary. A Chengdu restaurant classic that bridges Sichuan and Guizhou influences.
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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.
800 g
snakehead fish (li yu) or grass carp
whole fish cleaned, or thick fillets
Not yet stocked in British Columbia
For the sour broth
2 tbsp
Pixian doubanjiang
light measure — not the dominant flavour
Not yet stocked in British Columbia
200 g
suan cai (pickled mustard greens)
rinsed, roughly chopped
Not yet stocked in British Columbia
2 medium
1 litre
fish stock
light, unsalted or lightly salted
Not yet stocked in British Columbia
15 g
3
spring onions
white and green parts, cut into sections
Your own market
2 tbsp
neutral oil
Not yet stocked in British Columbia
To finish
2 tbsp
chili oil
Not yet stocked in British Columbia
1 tbsp
Sichuan pepper oil
Not yet stocked in British Columbia
100 g
glass noodles
soaked until pliable, optional; added in the last 2 minutes
Not yet stocked in British Columbia
Each tap is counted, so the stockist sees the demand Provenance sends them.
II
The Method
1
Heat the neutral oil in a wok or wide pot over medium heat. Add the doubanjiang and stir-fry for 1–2 minutes until the oil turns a deep brick-red and the paste smells fragrant and toasted, because cooking the paste in fat this way draws out its colour and fermented depth in a way that adding it later to liquid never will. Add the ginger and the white parts of the spring onion and stir for a further 30 seconds.
From the canon — Doubanjiang — the 'soul of Sichuan cuisine' — is a fermented paste of broad beans (fava beans) and chillies that is to Sichuan cooking what soy sauce is to J… Doubanjiang (Sichuan Fermented Bean Paste — Aged vs Fresh) →
2
Add the suan cai and tomato wedges, stir and press the tomatoes lightly so they begin to break down, then cook for 3–4 minutes until the tomatoes have softened and the base smells sharply sour. Pour in the fish stock and bring to a gentle simmer, then taste: the broth must be assertively sour at this stage, because if that acid edge is not present now it will not sharpen once the fish goes in — if it is not, add more suan cai. This is where the dish lives or dies — insufficient acid from the pickled vegetables and tomato will render every subsequent step irrelevant.
From the canon — Suan cai (酸菜, literally sour vegetable) is the traditional lacto-fermented napa cabbage of northern China — particularly Dongbei (northeast China: Liaoning, … Suan Cai (酸菜) — Northern Chinese Fermented Cabbage: The Cold-Climate Preserve →
3
Lay the fish — whole or in thick fillets — into the broth while it is still cold or just warm, and raise the heat gently so the broth and fish come to temperature together, because starting the fish in a violent boil seizes the outside before the centre is cooked and breaks the flesh apart. The fish is done when the flesh turns opaque throughout and yields to the lightest pressure without resistance; do not boil aggressively.
4
If using glass noodles, add them in the final 2 minutes of cooking so they absorb the sour broth rather than swelling in plain water and diluting what they carry. They are ready when translucent and supple.
5
Transfer the fish and broth to a serving bowl. Drizzle the chili oil and Sichuan pepper oil over the surface last, so their heat and numbing fragrance sit bright on top rather than cooking off into the broth. Scatter the green spring onion tops; the surface should carry a thin slick of red-orange oil with a faint numbing aroma rising from the bowl.
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 — Live snakehead fish (li yu), hand-made Pixian doubanjiang aged two or more years, house-fermented suan cai, and a rich home-made fish stock from the fish's own bones and head.
02
Estate — Fresh whole grass carp, a named Pixian doubanjiang from a single producer, good commercial suan cai rinsed well, and a clean light fish stock.
03
Market — Fresh firm white fish fillets (sea bass, tilapia), standard Pixian doubanjiang, packaged suan cai (pickled mustard), and a mild chicken or vegetable stock in lieu of fish stock.
04
House — Frozen white fish fillets, any doubanjiang to hand, suan cai substituted with a mix of rice vinegar and pickled jalapeño, and water with a stock cube — the dish will be generic but recognisable.
IV
Sensory Tests
◇Smell. The doubanjiang base smells fragrant and toasted, with a deep brick-red colour in the oil — raw paste smell is gone.
◇Taste. The broth is assertively and cleanly sour before the fish is added; heat from chili is secondary and does not dominate.
◇Touch. The fish flesh yields to the lightest pressure and is opaque throughout — it has not been hardened by rapid boiling.
◇Sight. Glass noodles (if used) are fully translucent and pliable, having absorbed the sour broth.
◇Smell. A faint Sichuan pepper numbing aroma rises from the finished bowl alongside the chili oil — present but not overwhelming.
◇Where it lives or dies. The broth must be built to an assertive sourness before the fish enters it — without that acid foundation from the suan cai and tomato, no subsequent adjustment will rescue the dish.
Pillar V
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The dishes this one teaches you, across the cuisines — on every recipe.
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VI
What to Pour
A dry, high-acid white wine with low tannin and no oak — a Muscadet, a young Aligoté, or a crisp off-dry Riesling Kabinett to echo the sourness without competing with it. A cold light lager or sparkling water with a wedge of lime serves equally well at the table.
The whole pairingPillar VII
Origin and lineage are part of membership.
Where the dish comes from and how it came to be — on every recipe.
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Sourced through Provenance