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Braised Trout in Chilli Bean Sauce (Dou Ban Yu)

This authentic braised trout in chilli bean sauce, known as dou ban yu, is a cornerstone of Sichuan home cooking. The dish celebrates the delicate flavour of rainbow trout, which is first lightly fried to achieve a golden skin before being gently simmered in a rich, spicy gravy. The fermented chilli bean paste provides a deep, savoury base that is perfectly balanced by the zing of fresh ginger and garlic, making it a spectacular centrepiece for any Chinese-inspired feast.

As a naturally dairy-free main course, this recipe is as nutritious as it is flavourful. Serving the fish whole is traditional in Chinese culture, representing abundance and completion, though the technique of scoring the flesh ensures the piquant sauce penetrates deeply. Pair it with steamed jasmine rice and stir-fried greens to soak up every drop of the glossy, fragrant sauce.

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Ingredients for Braised Trout in Chilli Bean Sauce (Dou Ban Yu)

  • 1 rainbow trout (about 350g /350g), scaled and cleaned, but with head and tail intact

  • Salt

  • 1 tablespoon Shaoxing wine

  • 120ml (100ml) cooking oil, plus 2-3 tablespoons more

  • 2 1/2 tablespoons Sichuan chilli bean paste

  • 2 teaspoons finely chopped ginger

  • 4 teaspoons finely chopped garlic

  • 180ml (200ml) chicken stock

  • 1 teaspoon light soy sauce, to taste

  • 2 teaspoons potato flour dissolved in 1 1/2 tablespoons cold water

  • 1 tablespoon water

  • 3-4 tablespoons finely sliced spring onion greens

  • 1 teaspoon sesame oil

How to make Braised Trout in Chilli Bean Sauce (Dou Ban Yu)

Make three even, diagonal cuts into the thickest part of each side of the fish, to allow the sauce to penetrate. Rub it inside and out with a little salt, then rub the Shaoxing wine into its belly cavity. Set aside for 10-15 minutes, then drain off any liquid and pat it dry. Rub a little more salt into the skin on both sides (to prevent sticking).

Add the 120ml (100ml) oil to a seasoned wok over a high flame. When it is hot, slide in the fish and fry on both sides until it is a little golden (it won't be cooked through). You need to turn the fish carefully and tilt it so the oil comes into contact with all the skin. Pour off the oil into a heatproof container and slide the fish on to a plate.

Clean the wok if necessary, then reheat it over a high flame. Add the 2-3 tablespoons oil and reduce the heat to medium. Add the chilli bean paste and stir-fry until the oil is red and smells delicious. Add the ginger and garlic and stir-fry until you can smell them. Pour in the stock and bring to a boil. Slide in the fish and cook for five minutes or so, seasoning with soy sauce to taste. Keep spooning the sauce over the fish and tipping the wok so the whole fish is cooked. (If you are using a larger fish, turn it halfway.) Using a wok scoop and fish slice, carefully lift the fish from the sauce and lay it on a serving dish.

Increase the heat, stir the potato flour mixture and add just enough to thicken the sauce to a rich, clingy consistency (do this in stages to avoid over-thickening). Stir in the spring onion, then switch off the heat. Stir in the sesame oil and ladle the sauce over the waiting fish.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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