Yin-Nourishing Lotus Root and Kudzu Soup: Recipe & TCM Benefits

Introduction to Herbal Soup

“Fresh Lotus Root, Kudzu Root, Hyacinth Bean, and Coix Seed Yin-Nourishing Soup” is a nourishing soup originating from the folk traditions of the Jiangnan region, formulated under the guidance of Traditional Chinese Medicine theory. This soup uses seasonal fresh and tender lotus root (Nelumbo nucifera) as the sovereign ingredient, combined with kudzu root (Pueraria lobata), white hyacinth bean (Lablab purpureus), and coix seed (Coix lacryma-jobi). These four ingredients together support the body’s natural ability to nourish and moisten, and help maintain digestive balance. In the name of this herbal food, “root” refers to kudzu root, “bean” refers to white hyacinth bean, and “seed” refers to coix seed. These three ingredients are slow-simmered together with fresh lotus root, resulting in a clear, slightly white broth with a sweet, moist taste, featuring the unique fragrance of lotus root and the soft texture of beans. It is a nourishing autumn delicacy suitable for all ages.

Under the guidance of the TCM principle of “food and herb homology,” this herbal soup is particularly suitable for consumption during the transition from summer to autumn or when the season feels dry. During this period, the body may experience occasional dryness and discomfort. The Fresh Lotus Root, Root Vegetables, Bean, and Kernel Yin-Nourishing Soup is specifically designed for this seasonal characteristic. By adopting a food-based approach, it gently helps maintain the body’s fluid balance and supports the harmonious function of the digestive system, thereby promoting a state of comfort. This formula also addresses the modern tendency toward occasional imbalance due to irregular diet and lifestyle, making it a daily soup that combines both flavor and wellness support.

Benefits of Herbal Soup

From the perspective of overall benefits, the Fresh Lotus Root, Kudzu Root, White Hyacinth Bean, and Coix Seed Nourishing Yin Soup focuses on the dual support of “nourishing” and “maintaining balance.” Fresh lotus root, when used raw, helps cool and soothe; when cooked, it supports digestion, appetite, and blood health. In this soup, after prolonged boiling, its nature shifts from cool to warm, primarily helping to support the spleen and stomach, and promote nourishment. Kudzu root (Pueraria lobata) helps maintain comfortable movement, supports moisture levels, and encourages digestive comfort. White hyacinth bean (Lablab purpureus) and coix seed (Coix lacryma-jobi var. ma-yuen) form a classic herbal pair for supporting digestive function and promoting the body’s natural elimination of excess moisture, helping the nourishing ingredients work without overwhelming the stomach.

In summary, this soup helps support overall well-being, particularly for those experiencing occasional dryness or discomfort such as dry throat, occasional hoarseness, dry skin, tired eyes, and changes in urinary or bowel comfort. Additionally, it provides notable support for digestive comfort, including occasional loss of appetite, feelings of heaviness, or minor fluid retention. Notably, during autumn when dryness is prevalent, this soup can serve as a routine household wellness tonic, consumed 2 to 3 times per week. It helps maintain the body’s ability to adapt to seasonal changes, promoting moisture and comfort in the respiratory and digestive tracts.

Traditional Chinese Medicine Insights

Support Lung Comfort and Promote Digestive Harmony

In Traditional Chinese Medicine theory, the Lung is considered a delicate organ that prefers moisture and dislikes dryness. Autumnal dryness may affect the Lung, leading to occasional dryness and discomfort. In the Fresh Lotus Root and Kudzu Root Yin-Nourishing Soup, both fresh lotus root and kudzu root are traditionally used to support the Lung and Stomach meridians, helping to maintain moisture and comfort. The abundant mucilaginous proteins and various vitamins in fresh lotus root help nourish the Lung and Stomach, while puerarin and daidzein in kudzu root promote healthy secretion from the salivary and digestive glands, thereby helping to maintain overall fluid balance. Together, they help soothe and comfort the Lung and Stomach.

Supporting Digestive Balance and Comfort

Another key mechanism of this soup lies in its ability to support the body’s natural upward and downward movements. Within the formula, kudzu root is traditionally used to help raise and distribute energy, supporting the clear yang qi of the spleen and stomach to the head, face, and limbs, thereby helping to alleviate occasional dizziness and muscular discomfort. Meanwhile, hyacinth bean and coix seed focus on promoting downward movement by aiding the spleen and supporting the body’s natural drainage, helping to maintain proper fluid balance. Fresh lotus root acts as a transit hub in this process; its rich dietary fiber helps promote regular bowel movements. Thus, through this interplay of upward and downward movements, the entire middle burner is supported in smooth function, helping to maintain both moisture and clarity without causing digestive discomfort.

Suggested Use

This herbal soup has a neutral nature and a wide range of applicability, making it especially suitable for the following groups. The first group consists of individuals who experience occasional dryness and warmth, commonly presenting with a lean body frame, occasional heat in the palms and soles, dry mouth and throat, and a preference for cool drinks. During autumn and winter, their moisture levels may become depleted, and consuming this soup can help maintain comfort. The second group comprises those who experience occasional fatigue and dryness, who, in addition to dryness, also feel spirit fatigue and lassitude, shortness of breath, and occasional sweating. In this soup, hyacinth bean and coix seed serve to support digestive function, while fresh lotus root and kudzu root help maintain moisture and fluid balance. Together, they help support both energy and moisture, complementing each other perfectly.

The third category comprises individuals who experience occasional digestive sluggishness with fluid retention, along with occasional dryness. These individuals commonly present with a sticky sensation in the mouth, poor appetite, and variable bowel movements, accompanied by dry skin and hair. This soup, characterized by its ability to support moisture without aggravating digestive burden and to promote comfort without draining moisture, perfectly suits the needs of this combination. Additionally, office workers exposed to seasonal dryness, young people whose fluid levels are depleted due to occasional late nights, middle-aged and elderly women experiencing occasional warmth and dryness during hormonal changes, and those in the later stage of a common cold with residual discomfort may all safely and effectively use this soup as a wellness dish.

Considerations

Although the Fresh Lotus Root, Kudzu Root, White Hyacinth Bean and Coix Seed Yin-Nourishing Soup is both herbal and edible with a neutral nature, certain individuals should still use it with caution or avoid it entirely. The first group comprises those with occasional digestive sensitivity, presenting with abdominal coldness or discomfort (warmth relieves discomfort; cold exacerbates), loose stools, tastelessness without thirst. While the white hyacinth bean and coix seed in this soup support digestion, fresh lotus root and kudzu root are slightly cool in nature; for individuals with less digestive warmth, this may worsen occasional loose stools or abdominal discomfort. If such individuals wish to consume the soup, it is recommended to add 3 slices of fresh ginger and 5g of tangerine peel while cooking, to help warm and harmonize the stomach.

The second category includes individuals in the early stage of a common cold with external chill, presenting with aversion to cold, fever, headache and body aches, nasal congestion with clear discharge, and cough with thin white sputum. At this stage, the body is focused on dealing with external factors, and it is generally advised to avoid deeply nourishing foods. The third category is “pregnant women”. Although most ingredients in this soup are safe for pregnancy, Coicis Semen (Coix seed) has a certain traditional caution regarding uterine activity. Therefore, pregnant women in the first trimester or those with a history of miscarriage should consult a healthcare professional before use. Additionally, individuals with allergies to legumes or lotus root should also refrain from use.

Ingredient Ratio in Formula

The following is the precise formula ratio for one serving (approximately 500 ml), for reference:

Fresh lotus root (with nodes) 150 grams – select lotus root with smooth skin, no dark spots, and clean pores; wash without peeling, cut into rolling knife chunks. Kudzu root (Pueraria lobata, fresh preferred, dried acceptable) 30 grams – if using dried, soak for 2 hours in advance. White hyacinth bean (Lablab purpureus) 20 grams – soak in clean water for 4–6 hours in advance, or refrigerate overnight, to shorten cooking time and fully release active constituents. Coix seed (Coix lacryma-jobi) 20 grams – also requires pre-soaking. Optionally add 3 red dates (Ziziphus jujuba, pitted) and 10 goji berries (Lycium barbarum) to enhance sweetness and support visual comfort, plus 1200 ml of clean water for simmering. If a meaty flavor is desired, add 100 grams of lean pork or pork ribs (blanched in boiling water first) and simmer together to enrich the soup.

Cooking method

Step 1: Ingredient Preparation – Gently scrub the surface of fresh lotus root under running water using a sponge brush. Cut off the stem ends but retain the skin (which is rich in dietary fiber and polyphenols). Slice into approximately 2 cm thick rolling-cut pieces, immediately submerge in clean water with a few drops of white vinegar to prevent oxidation and discoloration. For fresh kudzu root, peel and cut into thick slices; for dried kudzu root, rehydrate in advance and then slice. Rinse white hyacinth bean and coix seed separately, then soak in ample clean water for at least 4 hours. Wash red dates and remove pits; rinse goji berries briefly.

Step two: Blanching to remove astringency – if adding meat, place lean pork or pork ribs in cold water, add three slices of fresh ginger and one tablespoon of cooking wine. Bring to a boil over high heat, skim off the foam, then remove and rinse with warm water. For the vegetarian version, blanch the soaked white hyacinth bean and coix seed in boiling water for 3 minutes to reduce the bean-like odor.

Step Three: Slow Simmering. Place all prepared ingredients (fresh lotus root pieces, kudzu root slices, white hyacinth beans, coix seed, and red jujubes) into an earthenware or clay pot (avoid using an iron pot to prevent the lotus root from discoloring). Add 1,200 ml of clean water. Bring to a boil over high heat, then immediately reduce to a gentle flame (lowest heat), cover, and slow-simmer for 1.5 hours. During this time, open the lid as little as possible; if additional water is needed, add only boiling hot water to avoid a sudden temperature drop that could affect the flavor and extraction of beneficial constituents.

Step 4: Seasoning and finishing: After 1.5 hours of simmering, uncover and add Goji Berries and a small amount of salt (no more than 1g per bowl, just enough to enhance flavor without tasting salty). Continue simmering for 5 minutes, then turn off the heat. Note that Goji Berries should not be cooked for too long, or they will lose their color and some nutrients. After turning off the heat, let it rest for 10 minutes until the soup cools to about 60°C. Skim off any surface oil (if meat was used), then serve. All ingredients in the soup are edible; especially the fresh Lotus Root and White Hyacinth Beans have a soft, sticky texture and should be chewed slowly.

Drinking Tips

1. Optimal Drinking Time and Frequency: It is recommended to take the soup warm between 9:00 am and 11:00 am (traditional spleen meridian time) or between 5:00 pm and 7:00 pm (traditional kidney meridian time), as the body’s absorption and utilization of the nourishing components may be highest during these periods. For daily wellness maintenance, drink 2 to 3 times per week—no need for daily consumption. If used to support comfort during seasonal dryness, it may be taken for three consecutive days, then switched to every other day.

2. Flavor Pairing and Personalized Adjustments: This soup is best enjoyed with a mild, natural flavor, but if it seems too bland, you may add 5 pitted dried longans 5 minutes before turning off the heat to enhance sweetness and thickness. For those with occasional internal warmth, such as swollen gums or mouth discomfort, add 15g of lotus seeds with plumule and cook together to support calmness. For individuals who tend to feel chilly, it is recommended to add 5 slices of fresh ginger and a small piece of cinnamon (about 3g) to balance the soup’s cool nature.

3. Storage and Reheating Methods for Leftover Soup: This soup contains no complex herbal ingredients, and consuming it the following day is generally safe; however, flavor and nutritional value will diminish over time. It is recommended to strain the leftover soup to remove the dregs and store it refrigerated for no more than 24 hours. When reheating, ensure it is brought to a full boil (boiling for at least 2 minutes) to maintain safety. Do not use a microwave for short-term heating, as uneven heat distribution may cause discomfort. For soup taken directly from the refrigerator, it is best to pour it into a small clay pot and gently heat over medium-low flame until it just begins to simmer, while adding a small amount of boiling water to restore its original concentration.