Polygonum multiflorum and Black Soybean Stew: Benefits & Recipe

Introduction to Medicinal Diet

“Polygonum multiflorum and Black Soybean Stew” is a time-honored TCM medicinal diet, with the key ingredients being *Polygonum multiflorum* (fleeceflower root / fo-ti) and black soybeans (*Glycine max*). *Polygonum multiflorum*, also known as *He Shou Wu*, is the tuberous root of the Polygonaceae plant *Fallopia multiflora* (Thunb.) Harald. After processing, its property is slightly warm, with bitter, sweet, and astringent tastes, and it enters the Liver (LR) and Kidney (KI) meridians. Black soybeans are neutral in property and sweet in taste, entering the Spleen (SP) and Kidney (KI) meridians, and are renowned as the “king of beans.” When combined, one tonifies and the other moistens, working synergistically to nourish the Liver and Kidney, blacken hair, and strengthen sinews. This formula is especially suitable for signs of premature aging caused by irregular lifestyle and excessive stress in modern people.

The medicinal soup is dark brown in color, with a rich aroma of beans and a soft, slightly sweet texture. According to the ancient Chinese medical classic *Bencao Gangmu* (Compendium of Materia Medica), the combination of He Shou Wu (Polygonum multiflorum, Fo-ti) and Hei Dou (Glycine max, black soybean) is recorded to “consolidate essence, nourish marrow, blacken the hair, and prolong life.” This formula is not merely a dietary supplement; rather, it is based on the theory that “the kidney stores essence, and its brilliance manifests in the hair” (肾藏精，其华在发). By tonifying kidney qi (KI) from its root, it restores luster to the hair from the inside out, while simultaneously strengthening the lower back and knees and delaying the aging process.

Efficacy of Medicinal Diet

From a therapeutic perspective, Polygonum multiflorum (He Shou Wu) stewed with black soybeans (Glycine max) mainly focuses on tonifying the liver and kidney, as well as darkening the hair and beard. Regular consumption can improve premature graying, dryness, and split ends of the hair caused by liver and kidney essence and blood deficiency. It also has a notable alleviating effect on common kidney deficiency symptoms in middle-aged and elderly individuals, such as soreness and weakness of the lower back and knees, dizziness, tinnitus, and frequent nocturnal urination.

Secondly, this medicinal food also has the effects of moistening the intestines to promote bowel movements, as well as nourishing blood and calming the spirit. The anthraquinone components in *Polygonum multiflorum* (He Shou Wu, Fleeceflower Root) promote intestinal peristalsis, while the dietary fiber in *Glycine max* (Hei Dou, Black Soybean) also facilitates defecation, making it especially suitable for habitual constipation due to blood deficiency. Furthermore, when paired with *Ziziphus jujuba* (Hong Zao, Red Date) and *Lycium barbarum* (Gou Qi, Goji Berry) and other supplementary ingredients, it can assist in calming the spirit and promoting sleep, alleviating restlessness and insomnia due to deficiency.

The Role of Traditional Chinese Medicine

In this formula, *Polygonum multiflorum* (He Shou Wu) serves as the sovereign herb. Its prepared form (Zhi He Shou Wu) specifically tonifies the Liver and Kidneys, supplements essence and blood, and is indicated for patterns of Liver and Kidney deficiency with essence and blood depletion. The raw form (Sheng He Shou Wu) leans more toward detoxification, stopping malaria, and moistening the intestines. In medicinal cuisine, only the prepared form (Zhi Shou Wu) is used to avoid its laxative effect and fully harness its nourishing properties. *Glycine max* (Black Soybean, Hei Dou) acts as the minister herb; its black color enters the Kidneys, allowing it to nourish Kidney yin, promote urination, and reduce edema. Additionally, it is rich in plant protein and anthocyanins, which assist *Polygonum multiflorum* in enhancing its antioxidant effects.

Additionally, the inclusion of *Ziziphus jujuba* (Chinese date) supplements the center and boosts qi, nourishes blood and calms the spirit; *Lycium barbarum* (goji berry) enriches the kidney and moistens the lung, benefits essence and brightens the eyes. Together, these three serve as adjuvants and guides. The overall formulation is characterized by “tonifying without causing stagnation, moistening without greasiness,” avoiding the epigastric distension and fullness that may arise from pure supplementation, while allowing damp turbidity a route of elimination through the water-draining action of black soybean (*Glycine max*). This aligns with the TCM principle of “tonifying while also unblocking” in formula construction.

Indications

Polygonum multiflorum stewed with black soybeans is particularly suitable for the following populations: first, middle-aged and elderly people, especially those with declining Kidney Qi presenting as increased white hair, loose teeth, and declining memory; second, white-collar workers with chronic sleep deprivation and high work intensity, who overconsume Liver Blood and often present with sallow complexion, dizziness, and blurred vision; third, those with constipation due to Blood deficiency, characterized by dry stool resembling sheep droppings, accompanied by palpitations and insomnia.

For women, the Blood Sea is depleted after menstruation. Moderate consumption of this dish can supplement qi and blood, helping to restore a rosy complexion. For some patients with hypertension and hyperlipidemia, the unsaturated fatty acids and anthocyanins in black soybean (Glycine max) can also assist in regulating blood lipids. However, it should be noted that not everyone can consume it in large amounts; one must adjust intake based on their own constitution.

Contraindicated Populations

Although medicinal diets are generally mild, there are still contraindications to bear in mind. First, those with spleen deficiency and loose, unformed stools should not consume them in excess, as He Shou Wu (Polygonum multiflorum), though having a moistening effect on the intestines, may aggravate diarrhea. Second, individuals with exuberant phlegm-dampness, a thick, greasy tongue coating, and an obese constitution are prone to having the stomach impaired and dampness generated, so they should use such diets with caution.

Polygonum multiflorum (He Shou Wu) contains a certain amount of anthraquinones. Long-term or excessive intake may cause liver damage. Therefore, patients with chronic liver disease or abnormal liver function should regulate under the guidance of a physician. Additionally, pregnant women, breastfeeding women, and children have special constitutions and should not blindly take tonics. During consumption, avoid eating with radish, scallion, and garlic, as this may weaken the medicinal effect.

Formula ingredient proportions

Standard formula (serves 2-3 persons): Processed Polygoni Multiflori Radix (Fo-Ti, prepared, 30 g) – purchase the processed product from a pharmacy; Glycine max (Black Soybean, 100 g); Ziziphus Jujuba Fructus (Red Jujube, pitted, 5 pieces, approx. 20 g); Lycii Fructus (Goji Berry, 10 g); Rock sugar or brown sugar to taste (adjust according to personal preference). To enhance savoriness, add 200 g lean pork or 6 chicken feet – blanch before adding to the decoction.

The proportions of each ingredient require attention: the dosage of He Shou Wu (Polygonum multiflorum) should not exceed 30g, while black soybeans (Glycine max) can be slightly increased to balance the medicinal properties. Red jujubes (Ziziphus jujuba) supplement Qi but have a sweet taste; excessive amounts can cause cloying greasiness. Goji berries (Lycium barbarum) should not be overused; 10g is sufficient. All solid ingredients should be soaked in advance before simmering. It is recommended that black soybeans be soaked for over 4 hours, or even overnight, so they are easier to cook thoroughly, facilitating the extraction of active constituents.

Preparation Method

Detailed Steps

Step 1: Pre-treatment. Rinse the prepared Polygonum multiflorum (He Shou Wu) quickly under running water, then wrap it in a small gauze pouch to prevent fine particles from mixing into the decoction. Wash the black soybeans thoroughly and soak them in advance. Clean the red jujubes, remove the pits, and soak the goji berries until rehydrated. If adding meat, cut it into pieces, place in a pot with cold water and ginger slices, then blanch to remove any blood foam.

Step 2: Simmering. Place all prepared ingredients (except rock sugar and Lycium barbarum [Goji berry]) into a clay pot or electric slow cooker. Add sufficient clean water (approximately 3-4 times the volume of the ingredients). Bring to a boil over high heat, skim off any foam, then reduce to low heat and simmer for 1.5-2 hours, until the Glycine max [black soybean] is soft and the soup turns dark brown.

Step 3: Seasoning and finishing. 10 minutes before turning off the heat, remove the He Shou Wu (Polygonum multiflorum) herb bag, add the pre-soaked Goji berries (Lycium barbarum) and rock sugar, and continue simmering for 5 minutes until the sugar dissolves. If using brown sugar, it can be added earlier. Finally, taste and adjust sweetness according to preference. Best served warm.

Usage Tips

1. Frequency control: Medicinal food should not be consumed daily. For routine health maintenance, 1-2 times per week is sufficient. Excessive consumption may lead to excessive internal heat or increase the burden on the liver. Continuous consumption should not exceed one month, and there should be an interval before resuming consumption.

2. Discontinue during special periods: During episodes of Exterior Excess patterns such as common cold with fever, sore throat, cough with profuse phlegm, as well as during heavy menstrual bleeding in women, suspend use to avoid tonification retaining pathogenic factors. Strictly contraindicated in patients with active liver disease or elevated transaminase levels.

3. Pairing recommendation: He Shou Wu (Polygonum multiflorum) and Black Soybean (Semen Glycines) Soup tends to be rather cloying and greasy. Adding two slices of Chen Pi (Pericarpium Citri Reticulatae) or a small piece of Sheng Jiang (Rhizoma Zingiberis Recens) to the soup can help regulate qi and resolve dampness, thereby reducing the cloying and greasy effect that may burden the stomach. Additionally, drink plenty of water after consumption to promote metabolism.

4. Optimal Timing: Best taken warm before breakfast or lunch, when yang qi is ascending, enhancing absorption. Consumption in the evening may interfere with sleep, as He Shou Wu (Polygonum multiflorum, Fo-ti) has both blood-tonifying and mind-refreshing effects. For children, dosage must be reduced and a TCM practitioner consulted.