Peanut Pig Trotter Soup (花生猪脚汤 / Huā Shēng Zhū Jiǎo Tāng)

Name: Peanut Pig Trotter Soup (花生猪脚汤 / Huā Shēng Zhū Jiǎo Tāng)
Prep time: 15 min
Cook time: 120 min
Total time: 135 min
Yield: 4 servings
Cuisine: Hunan
Ingredients: 1 pig trotter (about 800 g, chopped into pieces); 100 g raw peanuts (with red skins); 6 slices ginger; 3 scallions, tied into a knot; 2 tbsp cooking wine; 1 tsp salt; 1/2 tsp white pepper; 2 liters water; 6 dried red dates (jujubes)

Peanut pig trotter soup (花生猪脚汤, huā shēng zhū jiǎo tāng) is one of the most revered nourishing soups in Hunan home cooking — a dish that has been passed down through generations for its restorative and health-giving properties. Chopped pig trotters are blanched, stir-fried with ginger, then slow-simmered for two hours with raw peanuts and red dates until the broth turns richly milky and the trotter meat becomes so tender it literally falls off the bone. The long simmering process dissolves the abundant collagen in the trotter skin and connective tissue into the broth, giving it a luxurious, slightly viscous texture that coats the tongue and feels deeply satisfying. The peanuts soften to a creamy consistency, absorbing the pork broth and contributing their own nutty sweetness, while the red dates add a gentle, warming sweetness that rounds out the savory richness. This is not a spicy dish — it belongs to the tradition of mild, restorative Hunan soups that are prized for their health benefits rather than their heat. It is the soup that Hunan mothers make for their daughters after childbirth, the soup that grandmothers simmer on cold winter mornings, and the soup that is served to anyone who needs nourishing, comfort, and care.

Collagen soup and the tradition of postpartum nourishment

In Hunan, as throughout southern China, the tradition of postpartum confinement (坐月子, zuò yuè zi) is taken very seriously. For the first month after giving birth, new mothers follow a careful regimen of rest, warmth, and specialized nourishing foods, and pig trotter soup with peanuts is one of the most important dishes in this tradition. The logic is rooted in traditional Chinese medicine: pig trotters are rich in collagen and gelatin, which are believed to help the body repair tissues, restore skin elasticity, and promote milk production for nursing. Peanuts are considered a warming food that nourishes the blood and spleen, while red dates (红枣, hóng zǎo) are a classic blood-building ingredient. Together, these ingredients create a soup that is both deeply nutritious and easily digestible. But this soup is not only for new mothers — it is a everyday nourishing dish enjoyed throughout the year, particularly in winter. The Xiangjiang River school of Hunan cuisine includes many such non-spicy, restorative soups alongside its famous fiery dishes, reflecting the holistic Chinese philosophy that food is medicine. In Hunan households, a pot of pig trotter soup simmering on the stove is a sign of care — someone is being looked after, someone is being nourished, someone is being loved through food.

Ingredients

Just 9 simple ingredients come together in this deeply nourishing soup. The quality of the pig trotter is paramount — seek out fresh trotters from a reliable butcher.

1 pig trotter (about 800 g, chopped into pieces)
100 g raw peanuts (with red skins)
6 slices ginger
3 scallions, tied into a knot
2 tbsp cooking wine
1 tsp salt
1/2 tsp white pepper
2 liters water
6 dried red dates (jujubes)

Step-by-Step Instructions

Soak the peanuts. Place the raw peanuts in a bowl of cold water and soak for at least 2 hours, or overnight for the best results. Soaking rehydrates the dried peanuts, softening them so they cook evenly and release their starchy sweetness into the broth. Use raw peanuts with their red skins intact — the red skin contains beneficial nutrients and adds a subtle earthy flavor to the soup. If you can only find peanuts without skins, they will still work, but the broth will be slightly lighter in both color and flavor. After soaking, drain the peanuts and rinse them under cold water. Pick out any discolored or floating peanuts, as these may be rancid. If you are using fresh (un dried) peanuts, you can skip the soaking step — just rinse them well and they are ready to use. The peanuts will become soft and creamy during the long simmering process, absorbing the rich pork broth and contributing their own nutty sweetness to the soup.
Blanch the pig trotter. Place the chopped pig trotter pieces in a large pot of cold water — make sure the water covers the trotters by at least 3 cm. Bring the water to a rolling boil over high heat. As the water heats, you will see significant amounts of grey foam and scum rising to the surface — pig trotters contain more blood and connective tissue than other cuts of pork, so the blanching is especially important. Let the water boil vigorously for 3 to 4 minutes, skimming the foam continuously. Remove the trotter pieces with a slotted spoon and rinse them thoroughly under cold running water, using your fingers or a small brush to scrub away any residual scum or bone fragments. Discard the blanching water. The trotter pieces should look clean and pale after blanching. This step is absolutely essential — without it, your soup will be grey, cloudy, and have an unpleasant porky odor. Take your time and do it thoroughly.
Stir-fry the trotter. Heat 1 tablespoon of cooking oil in a heavy-bottomed pot or Dutch oven over medium heat. Add 3 slices of ginger and the scallion knot, and stir-fry for 30 seconds until fragrant. Add the blanched pig trotter pieces and stir-fry for 4 to 5 minutes, turning the pieces frequently so they brown evenly on all sides. The skin and fat should take on a light golden color, and you will hear sizzling as the fat begins to render. This browning step is critical for two reasons: first, the Maillard reaction develops deep, savory flavors that will infuse the entire broth. Second, the heat begins to break down the collagen in the skin and connective tissue, which is what gives this soup its signature silky, gelatinous texture. Pour in 2 tablespoons of cooking wine and let it sizzle and evaporate — the wine deglazes the pot, lifting the browned flavor bits from the bottom, and its alcohol dissolves fat-soluble flavor compounds. The trotter pieces should be fragrant and lightly caramelized at this point.
Simmer the soup. Add the soaked peanuts, the remaining 3 ginger slices, and the red dates to the pot with the trotters. Pour in 2 liters of hot water — use hot water to avoid shocking the meat and tightening the collagen fibers. Bring the liquid to a rolling boil, then immediately reduce the heat to the lowest setting that maintains a gentle, steady simmer. You should see small bubbles rising slowly and steadily — not a vigorous boil. Cover the pot with a tight-fitting lid and let it simmer undisturbed for 90 to 120 minutes. Do not lift the lid during simmering — every peek releases heat and steam and extends the cooking time. During this long, slow simmer, the collagen in the pig trotter skin and connective tissue gradually dissolves into the broth, turning it from clear to a rich, milky, slightly viscous liquid. The peanuts soften and swell, absorbing the pork broth. The trotter meat becomes fall-apart tender, and the skin turns gelatinously soft and translucent. If the water level drops significantly during simmering, add a small amount of hot water to keep everything submerged.
Season the broth. After 90 to 120 minutes of simmering, remove the lid and check the trotters — the meat should be extremely tender, easily pierced with a chopstick, and the skin should be soft and gelatinous. The broth should be milky, slightly thickened, and richly aromatic. The peanuts should be soft and creamy. Now add 1 teaspoon of salt and 1/2 teaspoon of white pepper. Stir gently to dissolve. Taste the broth and adjust the seasoning — you may want a little more salt, but add it gradually, as the peanuts and trotters already contain some natural salinity. The white pepper adds a gentle warmth that balances the richness of the collagen-heavy broth. Remove and discard the ginger slices and the scallion knot. Remove the red dates as well if you prefer a cleaner presentation, or leave them in for their subtle sweetness and visual appeal. Give the soup one final gentle stir, being careful not to break apart the tender trotter pieces.
Serve in bowls. Ladle the hot soup into individual serving bowls, making sure each bowl gets a generous portion of trotter pieces, soft peanuts, and red dates along with plenty of the rich, milky broth. Garnish with a sprinkle of chopped scallion greens or fresh cilantro for a pop of color and freshness. Serve immediately while piping hot. The trotter meat should be so tender that it falls off the bone with the slightest pressure from a spoon or chopstick. The broth, rich with dissolved collagen, will have a luxurious, slightly viscous mouthfeel that coats the tongue — this is the hallmark of a properly made pig trotter soup. In Hunan, this soup is traditionally served as a nourishing main dish, accompanied by steamed rice and a simple stir-fried vegetable. It is especially popular during the cold winter months and for postpartum recovery, as the high collagen content is believed to promote skin health, joint mobility, and overall vitality. Any leftover soup will solidify into a gel when refrigerated — simply reheat gently on the stove, and it will return to its liquid form.

Secrets to rich, gelatinous trotter soup

Blanch thoroughly. Pig trotters release a lot of scum — thorough blanching is essential for a clean, milky broth.
Brown the trotter first. Stir-frying before simmering develops Maillard flavors and kickstarts collagen breakdown.
Simmer low and slow. Two hours of gentle simmering is the key to dissolving collagen and achieving that signature viscous texture.
Use raw peanuts with red skins. The skins add nutrients and a deeper, earthier flavor to the broth.

Variations

This nourishing soup template is highly adaptable. Here are three popular variations.

Pig trotter soup with lotus root

Replace the peanuts with chunks of fresh lotus root for a lighter, more refreshing version. The lotus root becomes tender and starchy, absorbing the pork broth while adding its own clean, slightly sweet flavor. This variation is popular in autumn and is considered especially good for the lungs and respiratory system in traditional Chinese medicine.

Pig trotter soup with papaya

Add chunks of green papaya to the simmering pot for a subtropical twist. The papaya enzymes help tenderize the trotter meat and add a gentle, fruity sweetness to the broth. This variation is popular in southern China and is particularly associated with promoting milk production for nursing mothers.

Pig trotter soup with soybeans

Substitute dried soybeans for the peanuts. Soybeans are high in protein and isoflavones, and they produce a slightly lighter, nuttier broth. Soak the soybeans overnight, same as peanuts. This variation is popular across all of China and is considered one of the most nourishing everyday soups, particularly valued for women's health.

Nutrition

Estimated values per serving (recipe serves 4). This soup is exceptionally rich in collagen, protein, and healthy fats from both the trotters and peanuts.

Nutrient	Per serving
Calories	420 kcal
Protein	32 g
Total fat	28 g
Saturated fat	9 g
Carbohydrates	12 g
Sodium	480 mg
Sugar	3 g

Values are estimates. Actual nutrition will vary depending on specific ingredients and portion sizes.

Frequently Asked Questions

What are the health benefits of pig trotter soup?

Pig trotter soup is one of the most prized nourishing soups in Chinese culinary tradition, valued for its exceptionally high collagen content. The skin, tendons, and connective tissue of pig trotters are rich in collagen and gelatin, which dissolve into the broth during the long simmering process. In traditional Chinese medicine, this soup is believed to nourish the joints, improve skin elasticity and complexion, strengthen bones, and promote overall vitality. The collagen in the broth is also thought to support digestive health by soothing and coating the intestinal lining. From a modern nutritional perspective, pig trotter soup provides high-quality protein, essential amino acids, and minerals like calcium and phosphorus from the bones. The peanuts add plant-based protein, healthy fats, vitamin E, and folate, while the red dates contribute iron and antioxidants. This soup is particularly recommended for postpartum recovery, as the collagen is believed to help the body heal and restore tissues. It is also a popular winter remedy for warming the body and boosting the immune system during cold weather.

Why does the soup gel when refrigerated?

When the soup is refrigerated, it solidifies into a gel because of the high concentration of gelatin and collagen that has been extracted from the pig trotter's skin, tendons, and connective tissue during the long simmering process. Collagen is a structural protein that, when heated in liquid for an extended period, breaks down into gelatin. Gelatin has the unique property of being liquid when warm and solid when cool — this is the same principle behind savory aspics, bone broths, and Jell-O desserts. The fact that your soup gels in the refrigerator is actually a sign of success — it means you have extracted a rich amount of collagen from the trotters, which is exactly what gives the soup its nourishing, restorative properties and its luxurious mouthfeel. When you reheat the gelled soup, it will return to a liquid state. The gel also helps preserve the soup — the solid form creates a seal that protects the broth from bacterial growth, which is why gelatin-rich broths traditionally keep longer than clear soups. Some Chinese families intentionally refrigerate the soup overnight and skim off the solidified fat from the surface before reheating, resulting in a cleaner, less greasy broth.

Can I use a pressure cooker to save time?

Yes, a pressure cooker (or Instant Pot) can significantly reduce the cooking time for this soup, though the result will be slightly different from the traditional stovetop method. To use a pressure cooker, follow the same preparation steps — soak the peanuts, blanch the trotters, and stir-fry them with ginger and scallions. Then transfer everything to the pressure cooker, add the hot water, peanuts, red dates, and remaining ginger, and cook on high pressure for 45 to 50 minutes. Allow the pressure to release naturally for at least 15 minutes before opening. The trotters will be extremely tender and the broth will be rich and gelatinous. However, the broth may not turn as milky white as the stovetop version, because the pressure cooker's sealed environment and shorter cooking time extract collagen efficiently but do not allow the same degree of fat emulsification that occurs during a long, open simmer. To improve the color, you can simmer the soup uncovered for an additional 15 to 20 minutes after pressure cooking. The flavor will be excellent either way, and the time savings — reducing a 2-hour simmer to under an hour — makes the pressure cooker a practical option for busy cooks.

Where can I buy pig trotters and how do I prepare them?

Pig trotters (猪脚, zhū jiǎo, also written as 猪蹄) are available at most Chinese and Asian butcher shops, and many mainstream supermarkets can order them upon request. When buying trotters, look for pieces that are clean, with smooth, pale skin and no dark spots or strong odors. Most butchers will chop them into pieces for you if you ask — this is strongly recommended, as cutting through trotter bones at home requires a heavy cleaver and considerable effort. If you must cut them yourself, use a heavy Chinese cleaver and chop through the joints rather than the bones. Before cooking, inspect each piece and remove any remaining hair by briefly passing it over an open flame (gas burner) or using a disposable razor. Wash the pieces thoroughly under cold water, paying attention to the areas between the toes. The blanching step in the recipe will handle any remaining impurities. If you cannot find pig trotters, pork shanks or pork hocks make acceptable substitutes — they have similar collagen content and will produce a similarly rich, gelatinous broth, though the texture and presentation will be somewhat different.

Related Recipes

If you loved this nourishing peanut pig trotter soup, try these other Hunan soups and stews.

Peanut Pig Trotter Soup (花生猪脚汤)