Chinese Cuisine

Kou Shui Ji (Sichuan Mouthwatering Chicken)

Name: Kou Shui Ji (Sichuan Mouthwatering Chicken)
Prep time: 20 minutes
Cook time: 25 minutes
Total time: 45 minutes (plus chilling)
Yield: 4 servings
Ingredients: 600 g bone-in, skin-on chicken thighs (about 4 thighs); 3 slices fresh ginger; 2 scallions, cut into pieces; 10 ml Shaoxing wine; 5 g salt; 3 tbsp chili oil (with sediment and flakes); 15 ml light soy sauce; 10 ml Chinkiang black vinegar; 10 g sugar; 10 g Chinese sesame paste, thinned with 10 ml warm water; 3 cloves garlic, minced; 5 g ground roasted Sichuan peppercorn; 1 tsp sesame oil; 20 g roasted peanuts, roughly crushed; 2 scallions, thinly sliced; null Toasted white sesame seeds; null Fresh cilantro leaves

Poached chicken drenched in a complex Sichuan sauce of chili oil, Sichuan peppercorn, soy, and sesame

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Jump to Recipe

The name kou shui ji translates to "mouth-watering chicken," and it earns that name before you even taste it. The sight of the dish, pale, perfectly poached chicken sliced thin and swimming in a vivid red sauce dotted with sesame seeds, crushed peanuts, and fresh scallion, triggers a Pavlovian response. The sauce is a masterwork of Sichuan flavor engineering: spicy from chili oil, numbing from ground Sichuan peppercorn, sweet from sugar, savory from soy, tangy from vinegar, and nutty from sesame paste. Every flavor note in the Sichuan repertoire lands in a single bowl.

This is one of Sichuan's most famous cold dishes, served at the beginning of a meal as a liang cai (cold appetizer). It is a dish of contrasts: the chicken is cool, mild, and silky, while the sauce is bold, complex, and assertive. The pleasure comes from the interplay between the two, the way the sauce coats each slice of chicken and delivers its layers of flavor one at a time. First the heat, then the numbness, then the sweetness and tang, all carried on a slick of fragrant chili oil.

The practical key is the poaching. The chicken must be cooked gently, then shocked in ice water, a technique that produces meat that is tender, silky, and slightly springy. Boiling the chicken aggressively toughens the proteins and dries out the meat. The ice bath not only stops the cooking but also tightens the skin and creates a clean, smooth surface that the sauce clings to beautifully.

At a Glance

Yield

4 servings

Prep

20 minutes

Cook

25 minutes

Total

45 minutes (plus chilling)

Difficulty

Medium

Ingredients

4 servings

1¼ lbbone-in, skin-on chicken thighs (about 4 thighs)
3 slicesfresh ginger
2scallions, cut into pieces
¾ tbspShaoxing wine
⅞ tspsalt
3 tbspchili oil (with sediment and flakes)
½ fl ozlight soy sauce
¾ tbspChinkiang black vinegar
2⅓ tspsugar
¼ ozChinese sesame paste, thinned with 10 ml warm water
3 clovesgarlic, minced
1⅔ tspground roasted Sichuan peppercorn
1 tspsesame oil
¾ ozroasted peanuts, roughly crushed
2scallions, thinly sliced
—Toasted white sesame seeds
—Fresh cilantro leaves (optional)

Method

1
Place the chicken thighs in a pot and cover with cold water by about 3 cm. Add the ginger slices, scallion pieces, Shaoxing wine, and salt. Bring to a boil over high heat.
2
As soon as the water reaches a full boil, reduce the heat to the lowest setting. The water should be barely simmering, with only the occasional lazy bubble rising to the surface. Skim any foam that forms.
3
Poach the chicken at this gentle simmer for 18 to 20 minutes. The chicken is done when the juices run clear and the internal temperature reaches 75°C. Do not rush this with higher heat.
4
While the chicken poaches, prepare an ice bath in a large bowl. Fill it with cold water and plenty of ice.
5
When the chicken is cooked, transfer it immediately to the ice bath. Let it cool completely, about 15 minutes. The rapid cooling stops the cooking process, firms the skin, and creates the characteristic silky texture of the meat.
6
While the chicken chills, make the sauce. In a bowl, combine the chili oil (with its sediment and flakes), light soy sauce, Chinkiang vinegar, sugar, thinned sesame paste, minced garlic, ground Sichuan peppercorn, and sesame oil. Stir well until the sugar dissolves and the sauce is smooth. Taste and adjust: it should be a balance of spicy, numbing, sweet, sour, and savory.
7
Remove the cooled chicken from the ice bath. Pat dry with paper towels.
8
Using a sharp cleaver or knife, chop the chicken through the bone into bite-sized pieces about 3 cm wide. Alternatively, remove the meat from the bone and slice it against the grain into pieces about 5 mm thick.
9
Arrange the chicken pieces on a serving plate, slightly overlapping.
10
Pour the sauce evenly over the chicken, making sure every piece is coated. The sauce should pool slightly around the edges of the plate.
11
Scatter the crushed peanuts, sliced scallions, sesame seeds, and cilantro (if using) over the top.
12
Let the sauced chicken sit for 5 to 10 minutes before serving, allowing the flavors to meld slightly.
13
Serve cold or at cool room temperature. Provide a spoon for scooping extra sauce from the plate onto each bite.

Key Ingredient Benefits

Sichuan peppercorn contains hydroxy-alpha sanshool, which activates the same nerve receptors as vibration, creating the characteristic tingling numbness. Research suggests this compound may have mild analgesic and anti-inflammatory properties.

Chili oil contains capsaicin, which research associates with increased metabolism, pain modulation, and cardiovascular benefits. The red color indicates the presence of carotenoid pigments with antioxidant properties.

Chicken thighs are higher in fat and iron than breast meat, which contributes to their richer flavor and more forgiving texture during cooking. They also contain more zinc and B vitamins.

Why This Works

Gentle poaching, followed by an ice bath, produces chicken with a texture that Chinese cooks describe as "hua," meaning slippery and smooth. At low temperatures (around 80°C), the muscle proteins denature slowly and retain more moisture. The ice bath contracts the skin and outer layer of the meat, creating a firm surface that contrasts with the tender interior.

The sauce is designed using the Sichuan principle of fu he wei, or "compound flavor." Rather than letting any single taste dominate, the goal is a balance where heat, numbness, sweetness, sourness, and savoriness are all present simultaneously. The sesame paste adds body and nuttiness, the chili oil provides both heat and a fragrant fat base, the vinegar adds brightness, and the Sichuan peppercorn contributes its distinctive tingling numbness.

Chili oil serves as both a seasoning and a sauce base. Because it is fat-based, it coats the chicken more effectively than a water-based sauce, carrying the dissolved flavor compounds directly to your palate with each bite.

Substitutions & Variations

Chicken: Bone-in, skin-on breast can substitute but is more likely to dry out during poaching. Reduce the poaching time by 3 to 4 minutes. Some versions use a whole poached chicken, chopped into pieces.
Chili oil: Homemade is ideal, but store-bought Lao Gan Ma chili crisp is a widely available alternative. It has a different texture (chunkier) but provides good flavor.
Sesame paste: Tahini thinned with sesame oil is a reasonable substitute. Toast the tahini briefly in a dry pan to deepen its flavor.
Vegetarian: Silken tofu, chilled and sliced, dressed with the same sauce is a common Sichuan preparation called liang ban dou fu.
Milder version: Reduce the chili oil and Sichuan peppercorn by half. Increase the sesame paste for a nuttier, less spicy sauce.

Serving Suggestions

Serve as a cold appetizer at the beginning of a Chinese meal, alongside other cold dishes like cucumber salad, wood ear mushroom salad, or smoked fish. It also works as a main dish over steamed rice, where the sauce acts as a richly flavored dressing. Cold beer or a chilled Riesling pairs well, as the sweetness tempers the heat and numbness.

Storage & Reheating

The poached chicken and sauce can be prepared separately up to 1 day in advance and refrigerated. Assemble and sauce the dish just before serving. Once sauced, the dish keeps for 1 day in the refrigerator. It is meant to be served cold, so no reheating is needed. The sauce can be made in larger batches and stored in a sealed jar in the refrigerator for up to 2 weeks.