Suan cai yu (酸菜鱼): fish with Chinese pickled mustard, origins, taste and how to enjoy it.

“Fish with sauerkraut?” The menu line is intriguing — and it has nothing to do with Alsatian choucroute. A guide to a Sichuan signature dish still little known in France.

Illustration of a large bowl of suan cai yu, white fish and fermented mustard in a golden chilli broth
In short

Suan cai yu (酸菜鱼, “sour vegetable fish”) comes from Chongqing and Sichuan: thin slices of white fish poached in a broth flavoured with suan cai, a lacto-fermented Chinese mustard. The broth is sour and spicy, the acidity softening the chilli. Unlike hot pot, it arrives ready, in a large bowl to share with plain rice. At Phở 98, Paris 9, it is on the evening menu alongside its beef version (酸菜牛肉).

What is suan cai yu?

Suan cai yu is fish poached in a broth of fermented greens, spiced with chilli and Sichuan pepper — lively, sour and comforting, nothing like a heavy sauerkraut dish.

Literally: 酸 (sour) 菜 (vegetable) 鱼 (fish)

The name reads like a recipe: sourness, the vegetable, the fish.

酸suān · sour

The natural acidity born from fermentation.

菜cài · vegetable

Fermented Chinese mustard greens.

鱼yú · fish

Thinly sliced white fish, poached at the last minute.

From Chongqing and Sichuan to all of China

Usually linked to Chongqing and Sichuan, its exact history is uncertain; it has spread widely across China in recent decades.

Suan cai, the Chinese “sauerkraut”

“Sauerkraut” is the closest French word for a lacto-fermented leafy vegetable — but it misleads on taste and use.

Lacto-fermented Chinese mustard

Broad-leaf mustard greens ferment in brine for days or weeks; lactic bacteria create a clean, round acidity and keep the crunch.

Sichuan suan cai

Fermented mustard greens in brine: bright acidity, crunchy, used to flavour the broth.

Alsatian sauerkraut

Shredded white cabbage fermented with dry salt: milder, soft, served as a side.

Why acidity balances chilli

The sourness cuts through the heat, refreshes the palate and brings out the sweetness of the fish.

What’s in the bowl

Three steps: prepare the fish, build the broth, finish with hot oil.

Cook flaming a wok over a strong flame, like hot oil poured over aromatics

The fish: thin white slices, velvety starch coating

Firm white fish sliced thin, coated in egg white and starch so it stays silky.

The broth: suan cai, dried chillies, Sichuan pepper, garlic, ginger

The pickled greens are stir-fried with aromatics, then simmered before poaching the fish.

Finishing with hot oil over the aromatics

Smoking oil is poured over garlic, chillies and pepper on top of the bowl, releasing their aroma.

At home, the short version
  1. Coat thin slices of white fish with egg white and starch.

  2. Fry rinsed suan cai with garlic and ginger, add water, simmer; poach the fish, then pour hot oil over the spices.

A simplified base, not a restaurant recipe.

Suan cai yu, hot pot, shui zhu yu: telling them apart

Three Sichuan dishes, three different stories. For the cook-it-yourself pot, see our guide to Sichuan hot pot.

Comparison of three Sichuan dishes to share
CriterionSuan cai yu (酸菜鱼)Hot pot (火锅)Shui zhu yu (水煮鱼)
BrothFermented greens, sourMala or clear brothVery spicy, oil-topped
HeatModerateVariable, often strongHigh
ServingArrives ready in a bowlCooked at the tableArrives ready
SharingShared bowl with riceLong group ritualShared, for chilli lovers

In hot pot you cook; in the other two you eat a finished dish. See also our guide to Chinese restaurants in Paris.

Phở 98 dining room with blue banquettes and ornate lights in the evening

The taste: what to expect

Sour first, then a gentle chilli heat and sometimes the tingle of Sichuan pepper. The silky fish brings sweetness: spicy, but not necessarily burning.

How to enjoy it

It arrives large and steaming, set in the middle of the table.

With plain rice, shared at the centre of the table

Rice soaks up the broth and tempers the heat; everyone helps themselves.

Asian restaurant table set around a simmered pot placed in the middle to share

How many people, which starters

Ideal for two or three with other dishes; pair with fresh or steamed starters.

Phở 98 circular bar counter with hanging glasses and bottles

Drinks for acidity and heat

Hot tea, a light cold beer, an aromatic white wine or sparkling water.

酸菜牛肉
Tip

酸菜鱼 = fish, delicate. 酸菜牛肉 = beef, rounder. Same broth.

The beef version: 酸菜牛肉, for non-fish eaters

Same sour, spicy broth with thin slices of beef — rounder in taste. Also on the Phở 98 evening menu.

Suan cai yu on Faubourg Montmartre: how Phở 98 serves it at night

At Phở 98, 45 rue du Faubourg Montmartre, Paris 9, suan cai yu is one of our evening Sichuan dishes, served to share. Browse the menu and book on TheFork.

Elegant Phở 98 dining room on Faubourg Montmartre, gilded central bar and blue banquettes
Frequently asked questions

Suan cai yu, clearly

  1. Is suan cai yu very spicy?

    Spicy, but usually gentler than other Sichuan dishes thanks to the acidity.

  2. Which fish is used?

    A firm white fish, thinly sliced and coated in starch.

  3. Can I make it at home?

    Yes: poach coated fish in a suan cai broth, then pour hot oil over garlic, chillies and pepper.

  4. Where to buy suan cai in Paris?

    In Asian grocery stores, especially in the 13th and Belleville, usually vacuum-packed.

  5. Is it gluten-free?

    Not necessarily: some condiments may contain gluten. Always ask the restaurant team.

  6. Suan cai yu vs hot pot?

    Hot pot is cooked at the table; suan cai yu arrives ready, in a sour and spicy broth.

Read and explore
Go further

Want to taste the other bold dishes of the region? Discover our restaurant sichuan paris and its evening menu to share.