Tender fish slices in a hot and tangy broth bursting with aroma, Suan Cai Yu is an iconic Sichuan dish that can be easily prepared at home.

a bowl of Suan Cai Yu, Sichuan fish with sour vegetable

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What is Suan Cai Yu
Ingredients & substitutes
Cooking procedure
How to serve
Other Sichuan dishes
📋 Recipe card

What is Suan Cai Yu

Today’s dish, Suan Cai Yu/酸菜鱼, is another signature dish of Sichuan cuisine that you shouldn’t miss. If you’re looking for flavor-intense dishes and enjoy a hot and tangy taste, this dish will satisfy all your craving at once.

Suān Cài Yú literally means “sour vegetable fish”. It originated in Chongqing/重庆, the largest municipality in China that was once part of Sichuan province, featuring two hallmark elements of Sichuan cuisine: the heat from chilies and the aromatic sourness from pickled mustard greens.

This dish shares many similarities with Shui Zhu Yu/水煮鱼 (Sichuan Boiled Fish), such as the use of sliced fish, the spicy soup base, and the cooking method. However, its distinctive tangy taste clearly differentiates it from the latter.

fish slices in a hot broth with pickled mustard greens.

It may look like a complicated dish based on the ingredient list. However, it only involves basic cooking techniques and comes together quickly once you’ve got all the ingredients ready.

Ingredients & substitutes

Fish choice

The traditional version of Suan Cai Yu calls for skin-on and bone-in pieces of a whole fish. My recipe uses fish filets instead, as they’re easier to handle for home cooks and less hassle for diners.

Catfish filets are a good choice. The ones shown in the image above are basa (aka pangasius), a species of catfish commonly found in the frozen food section of Chinese/Asian shops.

🌟 SUBSTITUTES: You may use other types of fish. The rule of thumb is to look for fish that isn’t overly flaky, meaning the flesh doesn’t fall apart easily once cooked.

Pickled mustard greens

Another star ingredient of the dish is pickled mustard greens, known as Haam Choy or Suān Cài/酸菜, which means “salted vegetable” or “sour vegetable”. Essentially, they’re whole pieces of Gai Choy/盖菜, a type of mustard greens, fermented in a salty and vinegary brine.

🌟 NOTE: You can find them packed in jars or vacuum-sealed plastic bags in the fermented food section of Chinese/Asian grocery stores. Show the names mentioned above to the shop assistant if you need help locating the correct item.

Aromatics

ginger, garlic, scallions and pickled chili.

The aromatic trio of Chinese cuisine – ginger, scallions, and garlic – adds more flavor to this dish. I particularly like using a generous amount of garlic as its fragrance pairs very well with spicy ingredients.

Authentic Suan Cai Yu also calls for Sichuan pickled chilies (Pào Jiāo/泡椒) for extra heat and tangy taste, a key flavor component of many Sichuan classics, such as Shredded Pork with Garlic Sauce.

🌟 SUBSTITUTES: You can replace Sichuan pickled chilies with pickled chili garlic sauce (Duò Jiāo/剁椒), or other types of pickled chilies, such as pickled jalapeños. If you really have trouble sourcing them, feel free to skip this ingredient as this won’t dramatically change the overall taste of the dish.

Condiments

rice wine, cornstarch, pepper, salt and sugar.

Here are five common condiments used in this recipe:

Shaoxing rice wine (or dry sherry), for marinating the fish
Cornstarch (or potato starch, tapioca starch), for marinating the fish
White pepper, for extra heat
Sugar, for balancing the saltiness
Salt

Spices

Similar to how you make Sichuan Boiled Beef, three flavor boosters – dried chili, Sichuan pepper, and sesame seeds – are drizzled with hot oil at the end of the cooking process, enhancing the overall aroma of the dish.

Cooking procedure

Step 1: Marinate the fish

Cut the fish filets into thin pieces by slicing them at a 45-degree angle. Remember that the fish will shrink in size after cooking so make sure the slices aren’t too small.

Put the fish into a bowl. Add Shaoxing rice wine, salt, white pepper, and cornstarch. Use your hand to gently mix and rub so that all the condiments are well absorbed. Leave to marinate while preparing other ingredients.

Step 2: Prepare the pickle

soaking pickled mustard greens in water.

Remove the pickled mustard greens from their packaging. Rinse under running water first, then soak them in water to reduce their sharp saltiness and tanginess.

Since their taste varies from brand to brand, the required soaking time may vary. It’s best to taste a piece, bearing in mind that they’ll taste milder once cooked in the broth.

Drain the vegetables and squeeze out as much water as possible, then cut them into bite-sized pieces. Since the stem part can be quite thick, slice it at an angle to make each piece thinner.

Step 3: Make the broth

First, sizzle minced ginger, minced garlic, chopped scallions, and chopped pickled chili in hot oil to bring out their aroma (keep some of the garlic and scallions for the last step).

stir frying pickled mustard greens with aromatics.

Then, stir in pickled mustard greens and fry them for about 1 minute.

simmering soup with pickled mustard greens.

Add water, or unsalted stock if available, to the wok. Bring it to a full boil then let simmer for 3 minutes with a lid on.

Step 4: Cook the fish

Once the broth is fragrant, add the fish. Remember to keep the heat low and arrange the fish without too much overlapping. Allow them to cook undisturbed in the gently simmering broth.

It doesn’t take long to fully cook the fish – about 2 minutes in my case, though this may vary depending on the size of your fish slices and the heat level. A sign of doneness is when the flesh loses its translucent look and becomes firm.

Step 5: Sizzle the toppings

Pour the fish and broth into a large serving bowl. Put the remaining garlic, scallions, dried chili, Sichuan pepper, and sesame seeds in the center.

Heat a small amount of oil until it just starts to smoke. Pour it over the toppings. Let the aromatics and spices sizzle, then serve the dish immediately.

How to serve

It’s best to enjoy this flavor-intense dish with plain steamed rice (so make sure it’s ready when the fish is done). Optionally, add one or two light, vegetable-based dishes on the side to form a balanced meal. Garlic Bok Choy, Spinach Salad, and Smashed Cucumber are some of the tasty options.

If you haven’t tasted Suan Cai Yu, you may find these tips helpful:

The dried chili and Sichuan pepper are added to enhance the dish’s flavor. They are not meant to be eaten. This is similar to the spices in Chongqing Laziji, which are also not consumed.
Although this dish may appear soup-like, the broth is usually not consumed as soup as it’s quite salty. However, it’s great when used in small amounts to flavor steamed rice.
Here is a way to reuse the leftover broth: remove all solid pieces, add some water to dilute it, and heat until piping hot. Then, serve it as a soup for another meal.

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