Plantago Asiatica and Pig Kidney Soup: Benefits, Recipe & Tips

Introduction to Medicinal Diet

Plantago asiatica (plantain herb) and pork kidney soup is a classic medicinal soup originating from the Lingnan region. It is made with fresh Plantago asiatica (plantain herb) and pork kidney as the main ingredients, supplemented with ginger, goji berry (Lycium barbarum), and other ingredients, slow-cooked to perfection. This soup skillfully blends the freshness of wild herbs with the richness of meat, resulting in a clear, slightly green broth that is sweet and refreshing on the palate. It is both a daily nourishing soup in ordinary households and a vivid embodiment of the “like treats like” principle in Traditional Chinese Medicine dietary therapy. In areas such as Guangdong and Guangxi, during the transition from spring to summer when dampness is heavy, many families specifically prepare this soup to regulate the body, dispel dampness, and clear heat.

Plantago asiatica (Plantain Herb) was classified as an upper-grade herb in *Shennong Bencao Jing* (_Divine Farmer’s Materia Medica_), where ancient scholars long recognized its unique value in clearing heat, promoting urination, cooling blood, and detoxifying. Pig kidney—the porcine renal organ—is understood in Traditional Chinese Medicine to tonify Kidney Qi and unblock the Bladder, thereby complementing Plantain’s water-draining action. This pairing of animal and plant ingredients not only creates a richly layered soup in flavor but also achieves a harmonious balance in dietary therapy: “tonifying without causing stagnation, and promoting without causing damage.” For those living in modern cities, consuming a diet high in grease and following irregular routines, this soup serves as a simple yet effective nourishing remedy to harmonize the constitution and alleviate fatigue.

Historical Origins of Plantago asiatica (Plantain Herb) and Pig Kidney Soup

It is said that He Mengyao, a renowned Lingnan physician of the Qing Dynasty, recorded in his work *Yi Bian* a folk prescription using *Plantago asiatica* (Plantain Herb) combined with animal kidney to treat difficulty in urination (*小便不利*). Although the text does not explicitly mention “pig kidney,” later generations of physicians have generally interpreted this method as the prototype of Plantago and Pig Kidney Soup. During its transmission among the people, this soup has been continuously improved, gradually adding *Zingiber officinale* (Ginger) to remove fishy odor and dispel Cold, and incorporating *Lycium barbarum* (Goji Berry) to enhance the tonifying effect, thus forming the classic formula we know today.

Efficacy of Medicinal Diet

The core effects of Plantago asiatica (cheqiancao) and pig kidney soup can be summarized as “clearing heat and draining dampness, tonifying the kidney and consolidating the foundation.” Plantago asiatica is sweet and cold in nature, entering the Liver (LR), Kidney (KI), and Small Intestine (SI) meridians, and effectively clears internal heat and dampness pathogens, promoting urination to reduce the burden on the bladder and urethra. Pig kidney is neutral in nature and salty in taste, entering the Kidney (KI) meridian, and tonifies kidney qi, benefits essence and marrow, and strengthens the lower back and knees. The combination of the two not only eliminates metabolic wastes through diuresis but also replenishes kidney essence via the kidney-tonifying ingredient, achieving a regulating effect of “removing pathogens without damaging the righteous qi.”

From a modern nutritional perspective, Plantain Herb (Plantaginis Herba) is rich in plantain glycosides, ursolic acid, flavonoids, and potassium, which endow it with significant diuretic, anti-inflammatory, and antioxidant properties. Pork kidney provides high-quality protein, iron, zinc, B vitamins, and coenzyme Q10, actively supporting normal kidney function, promoting erythropoiesis, and alleviating fatigue. Therefore, this soup offers beneficial adjunctive support for mild edema, urinary tract infections, kidney deficiency lower back pain, and lumbar soreness resulting from prolonged desk work.

The Role of Traditional Chinese Medicine

In the theoretical framework of Traditional Chinese Medicine, the action pathway of Plantago asiatica (plantain herb) and pig kidney soup is very clear: Plantago asiatica excels at “unblocking and disinhibiting” while pig kidney excels at “tonifying and supplementing.” Plantago asiatica is sweet in flavor and cold in nature, most skilled at clearing Damp-Heat and promoting the free flow of the Waterway. The *Bencao Huiyan* (Collected Commentaries on the Materia Medica) states that it “can dispel Wind Toxin, disinhibit urination, and eliminate Damp Bi.” When Damp-Heat evil descends into the Bladder (BL), causing scanty dark urine, dribbling, and painful stranguria, Plantago asiatica acts like a scavenger to drain the Damp-Heat out through urination. Meanwhile, pig kidney uses the principle of “like treats like” to directly tonify Kidney Qi and strengthen the lower back and spine. It has a favorable effect on Kidney Deficiency patterns presenting with soreness and weakness of the lower back and knees, tinnitus, dizziness, and frequent urination.

Of note, the combination of ingredients in this soup embodies the TCM formula principle of “tonifying while also clearing”. Pure tonification tends to cause stagnation and cloying, while pure clearing may consume right qi. The cold-cool nature of Plantago asiatica (Plantain) appropriately moderates the rich, cloying quality of pork kidney, while the warm-tonifying nature of pork kidney prevents Plantain from being overly cold and damaging the yang qi of the Spleen and Stomach. Together, one clears and one tonifies, one drains and one astringes, harmonizing the Qi transformation function of the Kidney and Urinary Bladder. As a result, water metabolism returns to normal, Dampness-Heat is eliminated, and Kidney Qi remains unharmed. This represents the highest realm sought by TCM medical food therapy—restoring the body’s self-healing ability through balance.

Indications

Plantago asiatica (Chinese plantain) and pig kidney soup is particularly suitable for the following groups: first, individuals with mild urinary tract infections who experience irritative bladder symptoms such as frequent urination, urgency, and dysuria, but have not yet developed severe inflammation. Drinking this soup can help clear heat, promote diuresis, and provide auxiliary anti-inflammatory effects. Second, office workers and drivers who sit for long periods and lack exercise—these groups often have poor circulation of qi and blood in the lower back, leading to soreness, distension, and a heavy sensation. The kidney-tonifying and lower back-strengthening properties of pig kidney can effectively alleviate these discomforts.

Third, for individuals experiencing a feeling of heaviness in the body, lower leg edema, and loose, sticky stools during the transition from spring to summer or during the plum rain season—a condition often described as ‘dampness encumbrance’—the diuretic and dampness-draining action of Plantago asiatica (plantain herb) helps the body eliminate excess water and turbid dampness. Fourth, for elderly individuals who suffer from frequent nocturia and weakness in the lower back and knees due to gradual decline of kidney qi, drinking an appropriate amount of this soup helps to secure and consolidate kidney qi and reduce the frequency of nocturia. Fifth, for women with postpartum or postoperative constitutional weakness accompanied by mild lower limb edema, the Plantago asiatica and pig kidney soup can supplement qi and blood while promoting diuresis to reduce edema, thereby facilitating recovery.

Contraindicated populations

Although Plantago asiatica and pork kidney soup is relatively mild in nature, caution or avoidance is still necessary for certain individuals. Firstly, those with Spleen and Stomach Yang Deficiency should not consume it in excess. Plantago asiatica has a cold and cooling property; if the person already presents with symptoms of inadequate Spleen Yang such as poor appetite, loose stools, cold abdominal pain, and cold extremities, drinking this soup may aggravate the deficiency-cold pattern, potentially leading to diarrhea or indigestion. Secondly, pregnant women and those planning for pregnancy should use Plantago asiatica with caution. Traditional Chinese herbal medicine holds that Plantago asiatica may have a “slippery fetus” (risk of miscarriage) effect. Although modern research lacks clear evidence, from a safety perspective, it is not advisable to ingest dietary formulas containing Plantago asiatica during pregnancy without professional guidance.

Additionally, patients in the acute stage of gout should limit their consumption. Porcine kidney is an animal organ with high purine content, which may trigger or worsen gout symptoms. Individuals with hyperuricemia or chronic kidney disease should consult a physician or dietitian before consumption. Finally, those allergic to Plantago asiatica (plantain herb) or porcine kidney should naturally avoid intake. In a small number of sensitive individuals, contact with or ingestion of plantain herb may cause allergic reactions such as skin rash or pruritus; if this occurs, discontinue use immediately and seek medical assistance. For children, the dosage should be reduced, and frequent consumption is not recommended.

Ingredient Formula Ratio

Prepare a standard portion of Plantago asiatica (Plantain Herb) and Pig Kidney Soup (serves about 2-3 people). Required ingredients: 150g fresh Plantago asiatica (Plantain Herb) (if using dried, about 30g), 2 pig kidneys (approximately 250-300g), 100g lean pork (optional, to enhance broth richness), 4-5 slices of Zingiber officinale (Ginger) (about 15g), 10g Lycium barbarum (Goji Berry). Seasonings: edible salt to taste (about 3-5g, adjust after tasting before serving), 15ml cooking wine (for deodorizing the kidneys), a pinch of white pepper (optional, for aroma and warmth).

When selecting Plantago asiatica (Asiatic plantain), choose fresh specimens with bright green leaves free from withered yellow spots, tender stems, and an earthy aroma. While flowering plantain retains its medicinal properties, the texture becomes tougher. For pig kidneys, select high-quality ones with smooth surfaces, pale pink color, and no off-putting odor. It is best to ask the butcher to remove the white membrane and glands in the center, which significantly reduces the gamey taste. If fresh Plantago asiatica is unavailable, authentic dried plantain can be purchased from Chinese herbal pharmacies. Before use, soak the dried herb in clean water for 15 minutes until softened.

Preparation method

Step 1: Prepare the pork kidney. Cut the pork kidney in half lengthwise and carefully remove the white fascia and dark red glandular tissue from the inside using a knife—these are the main sources of the gamey smell. Score the surface of the kidney in a shallow cross-hatch pattern (to allow better absorption of flavors), then slice into pieces about 0.5 cm thick. Place the sliced kidney in a bowl, add cooking wine and a pinch of salt, and rub for 1 minute. Rinse repeatedly under clean water until the water runs clear, then squeeze out excess water and set aside. Slice the lean pork into thin pieces as well, blanch in boiling water, and rinse off any scum.

Step 2: Process the Plantago Herb (车前草). Remove old roots and yellow leaves from fresh Plantago asiatica (plantain herb). Gently rinse away sediment and impurities from the undersides of the leaves under running water, paying special attention to the junction of roots and stems where dirt may accumulate. After washing, drain well and cut into segments about 3–4 cm long. If using dried herb, simply soak in cold water for 30 minutes until softened, then rinse and use directly. Peel and thinly slice fresh Zingiber officinale (ginger). Rinse Lycium barbarum (goji berries) briefly with water and drain.

Step 3: Begin simmering the soup. Place a clay pot or ceramic soup pot with approximately 1500 ml of water (about 6 bowls of water) over high heat. Once the water comes to a rolling boil, first add the ginger slices and the blanched lean pork. Reduce the heat to medium-low and simmer for 15 minutes. Then, add the cut sections of Plantago asiatica (common plantain) and the sliced pork kidney. Continue simmering over medium-low heat for another 10-15 minutes. During this time, skim off any foam that rises to the surface with a spoon to keep the soup clear. Do not overcook the pork kidney, as it will become tough and chewy. When the kidney slices curl and change color, and the soup turns milky white, turn off the heat.

Step 4: Seasoning and Garnishing. Two minutes before turning off the heat, add Lycium barbarum fruit (Goji berries). Then season with salt according to personal taste. Be careful not to add salt too early, as this may cause the pork kidney to lose moisture and become tough. For a mildly spicy flavor, you can sprinkle a little white pepper powder, which helps remove any gamey taste and enhances the aroma. Finally, ladle the soup into a large bowl. To make the soup look more refined, you can garnish with a few Goji berries and a small piece of cilantro (coriander). At this point, a fragrant, nourishing Plantain Herb and Pork Kidney Soup is ready to serve.

Tips for Consumption

First, the optimal drinking time and frequency. It is recommended to consume it warm between 9:00 and 11:00 AM (the Spleen Meridian (SP) time period) or between 5:00 and 7:00 PM (the Kidney Meridian (KI) time period). During these times, the body’s qi and blood flow through the Spleen and Kidney meridians, which is more conducive to the absorption of the medicinal effects. Drink 1-2 times per week—no need for excess. Do not take it continuously for more than two weeks; pause for a few days to allow the body to self-regulate and rebalance. For those with significant Damp-Heat, it can be taken for 3 consecutive days, followed by a 2-day interval before resuming.

Second, pairing and contraindication reminders: On the day of consuming this soup, try to avoid acrid-hot and drying foods such as chili peppers, lamb, and baijiu (white liquor), as their acrid-heat nature may conflict with the cold-cool nature of *Plantago asiatica* L. (plantain herb), disrupting the stomach and intestines. It is also inadvisable to consume large amounts of cold-cool fruits such as watermelon and persimmon at the same time, as the cumulative cold may impair spleen yang. If the soup tastes bland or slightly fishy, a few drops of fresh lemon juice can be squeezed in before drinking—this not only enhances the flavor but also increases vitamin C intake.

Third, Storage and Reheating Instructions. This soup is best consumed freshly made for optimal flavor and therapeutic efficacy. If a larger quantity is prepared, separate the soup from the solid ingredients, allow them to cool naturally, then seal and store in the refrigerator. It is recommended to consume within 24 hours. When reheating, it is best to use a clay pot or steam the soup (double-boiling method) over low heat until it just reaches a simmer. Avoid prolonged high-heat reheating in a microwave oven, as this may damage the active constituents of *Plantaginis Herba* (Plantain Herb) and affect the taste. If the soup develops an off-odor or appears turbid with flocculent matter after reheating, it indicates spoilage and must not be consumed.