Red-braised mandarin fish (红烧桂鱼, hóng shāo guì yú) is a classic Hunan preparation of one of China's most prized freshwater fish. Mandarin fish (siniperca chuatsi), also known as Chinese perch, has firm, sweet flesh that holds up beautifully to braising. The fish is pan-fried until golden, then simmered in a rich sauce of soy sauce, dried chilies, garlic, and ginger until the sauce reduces to a thick, glossy glaze. The result is a dish where the fish absorbs the deep, savory flavors of the braise while maintaining its delicate texture. The skin becomes slightly crispy from the initial frying, and the meat flakes apart tenderly. It is a dish that showcases the Hunan talent for making fish that is both elegant and boldly flavored.
Mandarin fish (gui yu, 桂鱼), also called Chinese perch, is one of the most highly regarded freshwater fish in Chinese cuisine. It is found in the lakes and rivers of central and southern China, including the waters around Dongting Lake in Hunan. The fish is prized for its firm, sweet, and nearly boneless flesh. In traditional Chinese gastronomy, it was considered a delicacy fit for emperors. The fish gets its English name from the mandarin duck, as the fish's mottled coloring resembles the duck's feathers. In Hunan, red-braising is one of the most popular ways to prepare mandarin fish, as the braising process infuses the mild flesh with bold flavors while the firm texture holds up to the long cooking time. The dish is often served at banquets and family gatherings, where a whole fish represents togetherness and abundance.
The secret to a perfect red-braise lies in the balance of the sauce. The soy sauce provides salt and umami, the sugar adds sweetness and helps create the glossy glaze, the black vinegar adds a subtle acidity that brightens the dish, and the dried chilies bring heat and aroma. The sauce should be reduced until it is thick enough to coat the fish but not so thick that it becomes sticky. Continuous spooning of the sauce over the fish during braising ensures that every part of the fish is evenly flavored. The initial pan-frying is equally important, as it seals the fish and creates a golden skin that adds texture and prevents the fish from falling apart during braising.
In Red-Braised Mandarin Fish, slow braising allows the chili heat to build gradually in layers, transforming tough cuts into tender, deeply flavored dishes. What sets it apart is the combination of the dark vinegar that provides the sour counterpoint essential to Hunan flavor balance and the dried red chilies that provide a different, deeper heat than fresh ones. This is the kind of dish that defines Hunan cuisine — fearless in its seasoning and generous in its spirit.
Ingredients
Mandarin fish is ideal, but any firm-fleshed white fish like sea bass or snapper works well. Ask your fishmonger to scale and clean the fish.
- 1 whole mandarin fish (about 700 g), scaled and cleaned
- 2 tbsp cooking oil
- 8 dried red chilies, cut into sections
- 6 garlic cloves, smashed
- 1 inch ginger, sliced
- 2 scallions, white parts, cut into sections
- 2 tbsp light soy sauce
- 1 tbsp dark soy sauce
- 2 tbsp Shaoxing cooking wine
- 1 tbsp sugar
- 1/2 tsp salt
- 1 tsp black vinegar
- 300 ml hot water or fish stock
- 1 tsp sesame oil
- 2 scallions, green parts, chopped for garnish
Step-by-Step Instructions
Step-by-Step Visual Guide
Preparation
Building Flavor
Cooking & Finishing
- Prepare the fish. Clean the fish thoroughly, removing the scales, gills, and internal organs. Rinse under cold water and pat completely dry with paper towels. Score the fish on both sides with 2-3 diagonal cuts about 1 cm deep. This helps the sauce penetrate the flesh and ensures even cooking. Rub the fish inside and out with a little salt and 1 tablespoon of cooking wine. Let it sit for 10 minutes. Drying the fish well is crucial, as wet fish will stick to the pan and splatter when fried.
- Pan-fry the fish. Heat 2 tablespoons of oil in a large flat pan or wok over medium-high heat until shimmering. Carefully lower the fish into the oil, laying it away from you to avoid splattering. Fry for 3 to 4 minutes on the first side until golden brown and crispy. Do not move or flip the fish during this time. Gently flip the fish using a wide spatula and fry for another 3 minutes on the other side. The skin should be golden and slightly crisp. Remove the fish and set aside on a plate.
- Build the braise. In the same pan with the remaining oil, reduce heat to medium. Add the dried chilies, smashed garlic, ginger slices, and scallion whites. Stir-fry for 30 seconds until fragrant. The chilies will darken and release their spicy aroma. Add the light soy sauce, dark soy sauce, and sugar, stirring for 10 seconds. The sugar will begin to caramelize with the soy sauce, creating the base of the red-braise flavor.
- Braise the fish. Pour in the hot water or fish stock, then add the remaining cooking wine, salt, and black vinegar. Bring the liquid to a boil. Carefully return the fried fish to the pan. Spoon the sauce over the fish continuously as it simmers. Cover the pan and reduce heat to medium-low. Braise for 8 to 10 minutes, spooning the sauce over the fish every 2 minutes. The fish should be fully cooked and the sauce should be reducing and thickening.
- Reduce and glaze. Remove the lid and increase the heat to medium-high. Continue spooning the sauce over the fish as it reduces. Cook for 3 to 5 minutes until the sauce becomes thick, glossy, and coats the back of a spoon. The sauce should cling to the fish in a shiny glaze. Carefully transfer the fish to a serving plate. Pour the remaining sauce over the fish.
- Garnish and serve. Drizzle with sesame oil and sprinkle with chopped scallion greens. Serve immediately with steamed rice. The fish should be tender and flaky, with the flesh infused with the deep, savory, slightly spicy braise. The sauce is the star of the dish, rich with soy sauce, garlic, and chili flavors. Make sure to spoon it over your rice. This dish is commonly served at Hunan banquets and family celebrations, as whole fish symbolizes abundance and prosperity in Chinese culture.
- Dry the fish completely before frying. Wet fish will stick to the pan and splatter oil.
- Do not flip the fish too early. Wait until the skin is golden and releases naturally from the pan.
- Spoon sauce continuously. Basting the fish with sauce during braising ensures even flavoring.
- Use hot liquid for the braise. Cold liquid will lower the pan temperature and slow the cooking.
Variations
Every Hunan dish has regional and personal variations. Here are some popular twists on this recipe.
With tofu
Add 200 g of firm tofu cubes to the braise along with the fish. The tofu absorbs the sauce beautifully and adds substance to the dish.
Duo jiao version
Replace the dried chilies with 3 tablespoons of chopped fermented chilies (duo jiao) for a more Hunan-authentic flavor. Duo jiao adds a fermented, tangy heat that is distinctive to Hunan fish dishes.
With mushrooms
Add 100 g of shiitake mushrooms to the braise. The mushrooms add earthy depth and a meaty texture that complements the fish.
Nutrition
Estimated values per serving (recipe serves 3). Values are approximate and will vary based on specific ingredients and portion sizes.
| Nutrient | Per serving |
|---|---|
| Calories | 320 kcal |
| Protein | 38 g |
| Total fat | 14 g |
| Saturated fat | 3 g |
| Carbohydrates | 8 g |
| Sodium | 820 mg |
| Sugar | 5 g |
Values are estimates. Fish is an excellent source of lean protein and omega-3 fatty acids.
Frequently Asked Questions
- Wok not hot enough — the oil should be shimmering but not smoking before you add ingredients.
- Overcrowding the wok — cook in batches if needed; too much food at once causes steaming instead of stir-frying.
- Cutting ingredients unevenly — uniform pieces ensure everything cooks at the same rate.
- Adding sauce too early — let the ingredients sear first, then add sauce in the final 30 seconds.
Serve immediately with steamed white rice — the dish should still be sizzling when it reaches the table. A simple soup like egg drop soup or tomato egg soup provides a cooling contrast. For a full Hunan spread, add one cold appetizer and one vegetable dish.
What Makes It Hunan
Red-Braised Mandarin Fish is a quintessential Hunan dish that showcases the bold, unapologetic flavors of Xiang cuisine. Unlike Sichuan's numbing-spicy heat, Hunan cooking relies on dry, direct spiciness from fresh and dried chilies, complemented by the deep umami of fermented ingredients like duojiao (chopped salted chilies) and douchi (fermented black beans).
In Hunan kitchens, pork is treated with reverence — whether smoked into larou (cured pork belly), braised slowly like this version, or stir-fried with fresh chilies. The province's mastery of pork cookery comes from centuries of preserving meat through smoking, salting, and fermenting, techniques born of humid southern winters and refined into high cuisine.
The slow braise (shao) is a hallmark of the Xiang River school. Meat simmers patiently in a reduced, deeply seasoned liquid until it yields completely to the chopstick — the technique that transforms tough cuts into the melt-in-mouth textures defining Hunan home cooking.
This recipe represents the Hunan preparation. Many Chinese-American restaurant versions of Hunan dishes add extra sugar, use pre-made sauces, or deep-fry ingredients that are traditionally stir-fried. The key difference is that Hunan cooking uses fresh whole chilies, fermented condiments like duojiao and douchi, and high-heat wok techniques — not thick, sweet sauces.
Related Recipes
Hunan cuisine has a deep tradition of fish cookery. Try these other Hunan fish preparations for more bold flavors.