Walnut & Kidney Nourishing Broth
Walnut & Kidney Nourishing Broth
A traditional broth that supports lower back vitality and kidney health.
Ingredients
- 100g walnuts, shelled
- 1 pork kidney (about 200g) or 200g pork tenderloin
- 10 red dates (jujube), pitted
- 3 slices ginger
- 1 spring onion, chopped
- 4 cups water
- Salt to taste
How to Prepare
- If using pork kidney: slice open, remove the white inner membrane, and soak in salted water for 30 minutes. Rinse and slice.
- Rinse walnuts and red dates in warm water.
- Bring water to a boil. Add kidney (or pork) and blanch for 1-2 minutes, then drain.
- Return meat to the pot with fresh water, walnuts, red dates, and ginger. Simmer over low heat for 1.5 hours.
- Season with salt and garnish with spring onion. Serve warm.
Why This Works
Walnuts are traditionally known to strengthen the lower back and support kidney vitality. Jujube dates nourish the blood and support recovery.
Modern Perspective
Walnuts are rich in omega-3 fatty acids and magnesium, which support bone health and muscle recovery. Red dates provide iron for healthy blood.
Why This Combination
Pig kidney with walnuts, and this is the clearest yang version of the kidney recipes on this site. The kidney in the Chinese model governs the lower back, the knees, the bones, and the ears, and kidney yang deficiency is the cold version of that: a dull lumbar ache worse when tired, cold feet, a craving for warmth. Pig kidney is the classical food for exactly that picture and walnuts are the everyday yang food, so the combination is both the traditional answer and a fairly rich, savoury soup. Eucommia bark goes in for the yang side specifically — it is the most targeted food here for a cold, aching lower back. The whole dish is warming and moving rather than nourishing, which is the distinction from the black sesame and goji recipes that sit on the same page. If you are cold and stiff, this is the direction. If you are hot and dry, it is the wrong one.
What Each Ingredient Is Doing
Dishes are combinations, not lists, and the reason for including an ingredient is often not the one you would guess from the name. Here is what each one is actually contributing.
- Pig kidney
The classical food for kidney yang and lower back pain. It needs careful cleaning — see the method, because the preparation is genuinely fiddly and skipping it is unpleasant.
The everyday yang food, and a good source of omega-3 on plain dietary grounds. They are what make this a dish rather than a preparation.
The most specific food on the site for kidney yang — a cold, aching lower back. It is a bark and it is a genuine medicine, and it is simmered rather than infused.
A few slices. Nothing yang-nourishing is complete without something moving, and this also handles the smell of the kidney.
The Properties of This Dish
The three properties each of these ingredients carries, so you can see what the dish as a whole adds up to. The full profile for each is below the table.
| Ingredient | Thermal nature | Flavour | Enters |
|---|---|---|---|
| Red Dates (Jujube) | 🔥 Warm | Sweet | Spleen, Stomach |
| Walnuts (He Tao Ren) | 🔥 Warm | Sweet | Lung, Kidney, Large Intestine |
| Eucommia Bark (Du Zhong) | 🔥 Warm | Sweet | Liver, Kidney |
| Ginger in Chinese Medicine | 🔥 Warm | Pungent | Lung, Spleen, Stomach |
The Key Ingredients in Full
How each is described in the traditional material, what the research says about it, and the safety notes. Where those two accounts disagree, both are given.
Red dates, also known as jujube or Chinese dates, are a staple in traditional food therapy. Discover their warming benefits, nutritional profile, and how to cook with them.
In the traditional material
Red dates are sweet and warm in nature. They tonify the Spleen and Stomach, nourish the Blood, and calm the Shen (spirit). In TCM, they are often used to treat fatigue, poor appetite, and restless sleep caused by blood deficiency. They are considered a gentle, balancing ingredient safe for daily use.
What the research supports
- High in vitamin C — a single serving provides a significant portion of your daily needs, supporting immune health
- Contains compounds that support relaxation and sleep, making them a natural aid for occasional insomnia
- Rich in iron and other minerals that support healthy blood production and circulation
- Supports digestive health by soothing the stomach and improving nutrient absorption
How it is used
- Slice and steep in hot water for a naturally sweet, caffeine-free tea that calms the mind before bed
- Add to soups and stews — red dates release sweetness into broths without added sugar
- Combine with goji berries and ginger for a classic TCM wellness tea blend
- Pit and chop into congee or porridge for a naturally sweet breakfast
Safety
Red dates are safe for general consumption. Diabetics should moderate their intake due to the natural sugar content. If you have digestive issues like bloating, start with small amounts.
Walnuts (he tao ren) are valued in TCM for nourishing the kidneys, supporting brain health, and moistening the lungs. Learn about their benefits and uses.
In the traditional material
Walnuts are sweet and warm in nature. They enter the Kidney, Lung, and Large Intestine meridians. In TCM, they tonify Kidney Yang, strengthen the lower back, moisten the Lungs, and lubricate the Intestines. Their brain-like shape is considered a signature of their brain-nourishing properties — a reflection of the TCM principle that "like supports like."
What the research supports
- Supports brain health with omega-3 ALA (alpha-linolenic acid) and antioxidant polyphenols
- Contains natural melatonin that may support healthy sleep-wake cycles
- Rich in copper, magnesium, and phosphorus for bone health and energy metabolism
- Supports heart health with monounsaturated and polyunsaturated fats
- Traditional Kidney tonic for strengthening lower back and knees, especially in older adults
How it is used
- Eat raw as a daily snack — a handful (about 7-10 halves) is the standard serving
- Add to stir-fries and congee for texture, flavor, and nutritional boost
- Pair with black sesame seeds for synergistic hair and kidney nourishment
- Use in baking and desserts — walnut cake is a traditional Chinese pastry
- Combine with kidney-tonifying herbs like eucommia and psoralea in soups
Safety
Safe for most people. High in calories — moderate intake recommended (handful per day). Those with nut allergies should avoid. May cause digestive discomfort in large amounts due to high fat content. The skin contains tannins that can be bitter — toasting lightly reduces bitterness. Store in a cool place as walnuts can go rancid quickly.
Eucommia bark (du zhong) is a classic TCM herb for lower back health, kidney strength, and joint support. Learn about its benefits and how to use it.
In the traditional material
Eucommia bark is sweet, warm, and enters the Liver and Kidney meridians. It is one of the most important herbs in TCM for strengthening bones and tendons. Its Chinese name "Du Zhong" literally means "strengthening the middle" (lower back). The bark has a unique property — when broken, its fibers stretch like rubber bands, which in TCM philosophy symbolizes its tendon-strengthening nature.
What the research supports
- Supports lower back and knee health — traditionally used for back pain, weak knees, and frequent urination related to Kidney deficiency
- May help maintain healthy blood pressure through compounds like chlorogenic acid and geniposidic acid
- Supports joint and bone health with anti-inflammatory and collagen-promoting effects
- Nourishes Kidney Yang, which in TCM governs lower body strength, bones, and reproductive health
- Contains antioxidants (iridoids, lignans) that protect against oxidative stress and age-related decline
How it is used
- Simmer eucommia bark slices in soups for 1-2 hours — the active compounds are not water-soluble until prolonged heating
- Brew as a medicinal tea (5-10g per cup, steep for 15 minutes), though soup decoction is more effective
- Combine with psoralea seeds (Bu Gu Zhi) and marrow bones for a classic back-strengthening broth
- Use in slow-cooked dishes with black beans, walnuts, or goji berries for synergistic kidney-tonifying effects
Safety
Eucommia bark is safe for general use as a culinary herb. People with Yin deficiency with heat signs (night sweats, red tongue, dry mouth) should use it cautiously. It is not recommended during acute febrile illness. Pregnant women should consult a healthcare provider before using medicinal amounts, though small culinary amounts are generally considered safe. Discontinue if you experience unusual warmth or irritability.
Ginger is perhaps the most versatile ingredient in TCM food therapy. Learn about its warming properties, health benefits, and why it appears in so many healing recipes.
In the traditional material
Ginger is pungent and warm in nature. It enters the Lung, Spleen, and Stomach meridians. Fresh ginger (Sheng Jiang) is prized for its ability to release the exterior (induce mild sweating), warm the middle burner (aid digestion), and stop nausea. In TCM, it is the go-to remedy for cold-stomach patterns, morning sickness, and digestive sluggishness.
What the research supports
- Powerful anti-inflammatory compound gingerol supports joint health and reduces exercise-related muscle discomfort
- Well-documented anti-nausea effects — studies confirm ginger is effective for motion sickness, morning sickness, and post-operative nausea
- Supports digestive health by stimulating saliva, bile, and gastric enzyme production
- May help regulate blood sugar and improve insulin sensitivity markers
- Warming properties help improve circulation and reduce cold hands and feet — a common TCM cold-stagnation pattern
How it is used
- Slice fresh ginger and steep in hot water for a simple digestion-supporting tea
- Add generous slices to soups, stews, and bone broths — the longer it simmers, the more warming properties are released
- Grate fresh ginger into stir-fries, marinades, and salad dressings for a pungent kick
- Combine with red dates and goji berries for a balanced, daily wellness tea
Safety
Ginger is very safe in culinary amounts. Medicinal doses (over 4g daily) may cause mild heartburn in sensitive individuals. Ginger may interact with blood-thinning medication — consult your doctor if you take anticoagulants.
When and How to Eat It
Timing
Dinner, taken regularly over weeks if the aim is the lower back, because this is a slow tonic rather than a quick one. Two hours of simmering. Not a cold-weather-only dish despite the yang nature — it suits a cold constitution year-round, though it is more welcome in winter.
Who it suits
A dull, aching lower back that is worse when tired and better with warmth and rest, cold hands and feet, a general sense of running cold, and a lower back that has been like it for a long time. The version with the stiff knees as well. It is also a genuinely good soup on ordinary grounds, so there is no need to talk yourself into it.
Who should skip it
If you are hot, flushed, sweaty at night, or thirsty for cold drinks — this is the wrong direction and will make a heat picture worse. If you have a history of kidney stones, gout, or high uric acid, pig kidney is not for you. If you are on blood-pressure medication, check with a doctor before using regular pork kidney, which is high in purines. And it is a heavy, warming soup: a poor fit if you are bloated or have a thick tongue coating.
How it fits into a day
As a dinner, with rice and a green vegetable. Its real value as a habit is that it is a savoury, filling, warming soup that happens to be a tonic, which is much easier to eat three times a week than a bitter infusion. The pig kidney is the part that requires conviction — the cleaning is real and it does put people off — and the walnut and eucommia version without the kidney is a good half-measure if you would rather not.
Adjusting the Dish
- Reduce the ginger by half and add dried tangerine peel for a gentler version that is still warming but easier on a sensitive stomach.
- Add goji berries in the last ten minutes for a more balanced version that is less purely warming. This is the variation to use if you are somewhere between the two constitutions.
- Add a whole star anise or two for a more familiar braised-beef flavour without changing the direction.
- Use chicken instead of pork kidney for a lighter version. You lose the classical specificity and gain a dish most people will actually cook twice.
What This Dish Is Not
It does not treat kidney disease, and this recipe has nothing to do with your kidneys in the medical sense. The TCM kidney is a functional system relating to jing, the lower body, and aging; it has no relationship to renal function or urinary disease, and nothing here is advice about yours. If you have actual kidney disease, are on dialysis, or have been told to manage potassium or protein, food advice from a Chinese framework is genuinely unsafe and you need a renal dietitian. Persistent back pain with numbness, weakness, or bladder and bowel changes needs a doctor urgently.
Before You Start
Pork kidney needs real work: split it, scrape out the white membrane, then soak in salted water for 30 minutes and rinse. Skipping any of these steps leaves a strong, unpleasant taste.
Practical Notes
- If you are not confident about cleaning kidney properly, buy it from a butcher who will do it. The membrane scraping is not optional.
- Walnuts are the single most useful ingredient on this site for anyone who spends a lot of time sitting — traditionally a lower-back food, practically a reasonable one too.
Substitutions & Swaps
| Instead of | Use | Trade-off |
|---|---|---|
| Pork kidney | Pork tenderloin, or 200g beef | Much easier and the dish is still good — it just becomes a walnut and pork broth rather than a kidney-nourishing one. |
| Walnuts | Pine nuts, or black sesame seeds | Both are nut-like and warming. Neither has the same lower-back association. |
Storing This
Keeps 3 days. Reheat gently.
中文版 · Chinese Version
补肾强腰、益精填髓，适合腰膝酸软、肾虚乏力的人食用。
食材 · Ingredients
- 核桃仁 100 克
- 猪腰 1 个（约 200 克）或猪里脊 200 克
- 红枣 10 颗（去核）
- 生姜 3 片
- 葱 1 根（切碎）
- 水 4 杯
- 盐适量
做法 · Method
- 猪腰处理方法：切开去白膜，盐水浸泡 30 分钟，冲洗后切片。
- 核桃仁和红枣用温水略洗。
- 水烧开，猪腰（或猪肉）焯水 1-2 分钟，沥干。
- 将肉、核桃、红枣和姜片放入锅中，加水小火煲 1.5 小时。
- 加盐调味，撒上葱花，温食。
原理 · Why It Works
核桃补肾强腰，猪腰以形补形，红枣养血安神，适合肾虚引起的腰膝酸软。
常见问题 · FAQ
买不到猪腰怎么办？
用猪里脊或牛肉代替，味道更清淡但仍然滋补。
Cook This Alongside
A deeply mineral-rich broth for lower back support and steady energy.
A warming, aromatic lamb stew that supports circulation and restores body warmth.
A traditional broth valued for supporting healthy hair, steady energy, and overall nourishment.
Learn About the Ingredients
Track Your Progress
Use our tool to measure your sleep, energy, or recovery.
Open Tool →FAQ
Can't find pork kidney?
Replace with pork tenderloin or beef slices. The flavor will be milder but still nourishing.
Can I use English walnuts?
Yes, any variety of walnuts works. Toast them briefly for a deeper flavor.
How do I clean pig kidney properly?
It is genuinely fiddly and worth doing carefully, because the taste is otherwise strong enough to put people off the ingredient permanently. Cut it lengthways into two halves, lift out the white membrane in the middle — that is the part that gives the off flavour — and score the surface in a shallow crosshatch without cutting through. Then soak it in cold water for twenty to thirty minutes, changing the water once, and the water will run noticeably pink. Pat it dry, and blanch it briefly in boiling water before it goes into the soup. Ten minutes of work, and it is the difference between a good soup and one you will not make again.
Is walnut soup better than the food version for kidney yang deficiency?
The food version — walnuts, a small amount of ginger, and a stew — is better for most people, because the recipes on this site are built to be made repeatedly rather than worked out. Eucommia bark is the genuinely specific ingredient, and it is a medicine rather than a food, so if your lower back pain is a long-standing and specific problem, it is worth a conversation with a practitioner rather than a self-directed course. If it is a general cold constitution, warm food, movement, and less overwork are the larger levers and the soup is a pleasant way to act on the first of those.
Sources for This Dish
Every claim on this page falls into one of two groups, and they are sourced differently. Statements about the traditional use of an ingredient are references to the classical and modern literature that describes it, and they are not claims that it works. Statements about research point at the published work, including the work that came back negative. Where a search link appears it goes to the current results for that query rather than to a single paper, so you can see the whole record for the ingredient instead of the most favourable part of it.
Reference pages
- Traditional medicine: what it is and what the evidence says — World Health Organization
- Traditional Chinese Medicine: what you need to know — US National Center for Complementary and Integrative Health
- Chinese Text Project — the classical sources, in the original — Chinese Text Project
- Healthy diet: what the World Health Organization actually recommends — World Health Organization
- Dietary supplements: what the FDA regulates and what it does not — US Food and Drug Administration
- All dietary supplement fact sheets, indexed — US National Institutes of Health, Office of Dietary Supplements
- FoodData Central — composition data for every food in this site’s recipes — US Department of Agriculture
- Nutrition: the European food safety authority’s position on claims — European Food Safety Authority
- EFSA publications and opinions — European Food Safety Authority
- PubMed Central — free full text for the papers behind the summaries — US National Library of Medicine
- MedlinePlus — plain-language health information — US National Library of Medicine
- Health information for older adults — US National Institute on Aging
- Aging and nutrition research briefs — US Department of Agriculture, Economic Research Service
- Food safety topics — European Food Safety Authority
- Compound profile: Jujuboside-A — PubChem, US National Library of Medicine
- Magnesium: fact sheet for health professionals — US National Institutes of Health, Office of Dietary Supplements
- Compound profile: alpha-Linolenic-acid — PubChem, US National Library of Medicine
- Compound profile: Pinoresinol — PubChem, US National Library of Medicine
- Ginger — US National Center for Complementary and Integrative Health
- Compound profile: 6-Gingerol — PubChem, US National Library of Medicine
- Iron: fact sheet for health professionals — US National Institutes of Health, Office of Dietary Supplements
Search the evidence yourself
- How good is the evidence in traditional Chinese medicine? — systematic reviews of trial quality — PubMed
- Adverse events in traditional Chinese medicine — systematic reviews of what is reported and what is not — PubMed
- Jujube (Ziziphus jujuba) and sleep — randomised trials — PubMed
- Jujube — systematic reviews and meta-analyses — PubMed
- Jujube — toxicity, safety and contraindications — PubMed
- Registered trials using jujube or red date — ClinicalTrials.gov
- NCCIH health topics matching “jujube” — US National Center for Complementary and Integrative Health
- Walnuts and cardiovascular outcomes — meta-analyses — PubMed
- Walnuts and cognition — randomised trials — PubMed
- Walnut — juglone, toxicity and safety — PubMed
- Registered trials using walnuts — ClinicalTrials.gov
- NCCIH health topics matching “walnut” — US National Center for Complementary and Integrative Health
- Eucommia — randomised controlled trials — PubMed
- Eucommia and blood pressure — meta-analyses — PubMed
- Eucommia — safety, dosing and toxicity — PubMed
- Registered trials using eucommia — ClinicalTrials.gov
- NCCIH health topics matching “eucommia” — US National Center for Complementary and Integrative Health
- Ginger for nausea — Cochrane and systematic reviews — PubMed
- Ginger for joint pain — randomised trials — PubMed
- Ginger — interactions with blood thinners and other drugs — PubMed
- Registered trials using ginger — ClinicalTrials.gov
Disclaimer
This website is a personal learning project and does not provide medical advice. All content is for informational and educational purposes only, based on traditional food therapy concepts and publicly available nutritional information.
- I am not a licensed physician, dietitian, or TCM practitioner. Nothing on this site should be interpreted as medical diagnosis, treatment, or prescription.
- Traditional food therapy concepts (Qi, Yin/Yang, Dampness, etc.) are cultural/philosophical frameworks, not clinically proven medical models.
- Individual responses to foods and herbs vary widely. What works for one person may not work for another, or may cause adverse effects.
- Always consult a qualified healthcare professional before making dietary changes, especially if you have a medical condition, take medications, are pregnant, or are nursing.
- If you experience persistent symptoms, seek medical attention promptly. Do not delay or disregard professional medical advice because of something you read here.
This site is funded by advertising. Ad placements are marked and are kept separate from the editorial content, so a sponsored position is never written into a recipe or a recommendation. Editorial Policy →
More Foods for Vitality & Recovery Recipes
A deeply mineral-rich broth for lower back support and steady energy.
A warming, aromatic lamb stew that supports circulation and restores body warmth.