Cogongrass Rhizome and Lean Pork Soup: Recipe, Benefits & TCM Guide

Herbal Soup: An Introduction

Imperata cylindrica (Baimaogen) and Lean Pork Soup is a traditional soup widely spread in the Lingnan region, renowned for its ability to support the body’s natural cooling and dampness-regulating functions. The preparation involves slow-cooking either fresh or dried Imperata cylindrica (Baimaogen) with lean pork over a gentle flame. The white imperata root is derived from the rhizome of the grass family plant Imperata cylindrica, classified as a medium-grade herb in the *Shennong Bencao Jing* (Divine Farmer’s Materia Medica). It is cold in nature and sweet in taste, entering the Lung, Stomach, and Bladder Meridians. Folk custom often involves digging fresh roots in spring and summer to make soup, traditionally consumed to promote comfort during periods of summer heat and internal heat sensations. The lean pork provides high-quality protein, which helps support the middle burner and nourish Qi, as well as nourish Yin and moisten dryness. When paired with the white imperata root, it not only moderates the cold nature of the herb but also imparts a naturally sweet and refreshing flavor to the soup. This makes it a nourishing soup suitable for daily consumption by the whole family.

This soup has been passed down for centuries, especially beloved in southern regions, where it is commonly consumed during the humid Plum Rain season or the sweltering midsummer months. Baimaogen and Lean Pork Soup (Woolly Grass Rhizome and Lean Pork Soup) belongs to the “clear-nourishing” category of traditional medicinal cuisine. Its uniqueness lies in the principle of “nourishing through clearing”—by helping the body eliminate excess heat and dampness, it supports the recovery of the Spleen and Stomach’s transport and transformation functions, thereby indirectly promoting nourishment. The soup has a clear, light-yellow color, a cool and mildly sweet taste, with a faint herbal aroma. It can be enjoyed as a daily side-dish soup, and may also be used as a supportive measure for occasional feelings of internal heat or temporary mild urinary discomfort.

Historical Origins and Modern Significance of Traditional Food Therapy

According to the Qing dynasty text *Shiliao Bencao* (Dietary Materia Medica), *Imperata cylindrica* (Baimaogen) was widely used in folk practice to support healthy fluid metabolism and help maintain a comfortable internal environment. During the Ming and Qing dynasties, health preservation literature from the Jiangnan and Lingnan regions often recorded the practice of cooking *Imperata cylindrica* (Baimaogen) with meat. Modern research further confirms that *Imperata cylindrica* (Baimaogen) is rich in active constituents such as triterpenoids, organic acids, and potassium salts, which support urinary health, help maintain normal microbial balance, and support immune function—providing new scientific evidence for this traditional dietary therapy.

Traditional Benefits of Soup

Mao Gen (Imperatae Rhizoma) Lean Meat Soup is traditionally used to support overall well-being. Its main actions are traditionally summarized as “supporting a balanced internal environment, promoting normal urination, maintaining blood health, and supporting healthy body fluids.” Specifically, its ability to support a balanced internal environment helps helps with occasional occasional discomfort associated with heat in the Lung and Stomach, such as throat irritation, dry mouth and thirst, or restlessness that may occur due to external wind-heat or spicy dietary habits. The soup is especially recognized for promoting normal urination, helping to increase urine output and support the body’s natural processes for maintaining fluid balance, thereby helping to maintain clear and adequate urine, and normal urine color.

In terms of blood cooling, Imperata cylindrica (Baimaogen) and Lean Meat Soup provides soothing support for occasional nose or gum sensitivity and minor expectoration concerns that may be associated with blood-heat patterns. Meanwhile, the lean meat in the soup helps replenish Yin fluids that may be consumed during occasional fever or sweating, thereby supporting the generation of body fluids and moisturizing dryness. This allows the body to maintain a balanced internal environment while preserving healthy Qi, achieving the ideal TCM principle of “dispelling pathogenic factors without harming the upright.” Regular moderate consumption may also support skin health and help maintain a clear complexion that may be affected by occasional internal heat and dampness toxins.

Interpretation from a Modern Nutritional Perspective

From the perspective of modern nutrition, Imperata cylindrica (Baimaogen) and lean pork soup is rich in potassium, which helps maintain electrolyte balance and normal blood pressure. The high-quality protein and B vitamins in lean pork support physical stamina and tissue repair. This combination endows the soup with traditionally recognized properties that support a balanced internal environment and healthy fluid metabolism, while providing essential nutrients—aligning with the contemporary wellness philosophy of seeking “effective yet gentle” health support.

The role in Traditional Chinese Medicine theory

From the perspective of Traditional Chinese Medicine, Imperata cylindrica (Baimaogen) has a sweet flavor and cold nature, entering the Lung Meridian, Stomach Meridian, and Bladder Meridian. Its core actions are to help maintain a balanced internal environment and support normal fluid metabolism, as well as to support healthy blood circulation and normal hemostasis. Its sweet-cold property helps generate fluids and helps with occasional occasional thirst. By entering the Lung Meridian, it supports Lung heat balance to help helps with occasional occasional cough and wheezing. By entering the Stomach Meridian, it helps maintain stomach fire balance to helps with occasional occasional vomiting and thirst. By entering the Bladder Meridian, it supports normal urination and helps maintain urinary comfort, assisting the body in expelling damp-heat. For conditions with occasional feelings of heat, thirst, and urinary discomfort during the early and middle stages of warm-heat patterns, Imperata cylindrica (Baimaogen) can help guide excess heat out through urine, reflecting the TCM principle of “providing an outlet for pathogenic factors.”

In TCM food therapy, pork is sweet and salty in flavor, neutral in nature, and enters the Spleen (SP), Stomach (ST), and Kidney (KI) Meridians. It is traditionally regarded as supporting Kidney Yin health, nourishing Blood and moisture balance, and helping to maintain Qi and healthy fluid distribution. The *Bencao Beiyao* (Essentials of Materia Medica) records that pork “moistens the intestines and stomach, generates essence fluids, enriches muscle and body, and nourishes the skin,” indicating its ability to support Yin fluid nourishment and supplement bodily fluids and blood. When combined with *Imperata cylindrica* (Baimaogen), the moistening property of pork helps soften the cool nature of *Imperata cylindrica*, thereby helping to avoid occasional stomach discomfort that might be caused by using *Imperata cylindrica* alone. Conversely, the clearing and draining property of *Imperata cylindrica* also helps helps maintain pork from becoming overly greasy. The two work synergistically, allowing the overall formula to achieve a harmonizing effect of “clearing the upper and directing downward, nourishing the center and settling the interior,” reflecting the exquisite TCM principle of “mutual balancing of properties and flavors and synergistic efficacy.”

Suitable For

Baimaogen Lean Meat Soup is particularly suitable for individuals with a Damp-Heat constitution. Such individuals often present with signs such as an oily complexion, occasional blemishes, a bitter taste in the mouth, dry mouth, sticky stools, scanty dark urine, and a yellow greasy tongue coating. During the transition from spring to summer or in the long summer season when dampness is heavy, consuming this soup 2 to 3 times per week helps the body maintain comfort during periods of internal damp-heat. For those who frequently stay up late, enjoy spicy and fried foods, or have habits like smoking or drinking that may lead to a tendency toward internal heat, this soup supports overall balance by helping to maintain a cool and moist internal environment.

For those experiencing mild urinary discomfort (such as frequent urination, urgency, or hesitant flow), difficulty urinating or edema, as well as nosebleeds or gum sensitivity due to Blood Heat, or summer-heat-related thirst, excessive sweating, and poor appetite, Mao Gen (Imperatae Rhizoma) Lean Meat Soup can serve as a gentle supportive dietary option. In children with summer-heat-induced heat rash, scanty dark urine, or restlessness, a small amount may be consumed under the guidance of a healthcare professional. Additionally, for individuals with a Liver Yang Rising or Damp-Heat constitution who are concerned about elevated blood pressure, moderate consumption of this soup may help support balanced blood pressure and helps with occasional occasional head discomfort.

Not intended for use by the following individuals:

Individuals with Spleen and Stomach Cold Deficiency should exercise caution when consuming Imperata cylindrica (Mao Gen) and Lean Meat Soup. This population often presents with cold pain in the abdomen, preference for warmth and pressure, loose stools or undigested food in the stool, poor appetite, a pale and swollen tongue with tooth marks, and a deep, slow pulse. The cold nature of Imperata cylindrica (Mao Gen) may increase the burden on the Spleen and Stomach, potentially leading to occasional loose stools or abdominal discomfort. If use is necessary, adding 3 to 5 slices of Zingiber officinale (Sheng Jiang) when preparing the soup may help moderate the cooling nature of Mao Gen; however, long-term or excessive consumption is still not recommended.

Pregnant and breastfeeding women should consume this soup only under the guidance of a TCM practitioner or professional nutritionist, as Mao Gen (Imperata cylindrica root) has a diuretic effect, which may affect the body’s fluid metabolism balance, especially during early pregnancy. Individuals with a Deficient Cold constitution, prone to cold hands and feet and aversion to cold, should not take this soup as a daily health beverage. In addition, those currently taking warm-tonifying Chinese herbs such as Panax ginseng (Ren Shen), Astragalus membranaceus (Huangqi), or Cervus elaphus (Lu Rong, velvet antler), or those suffering from chronic Deficient Cold conditions, should avoid concurrent use or consult a physician to helps maintain potential interaction with medications. Individuals allergic to Imperata cylindrica (Mao Gen) or pork should not consume this soup.

Ingredient Formula Ratio

Below is the standard formula and proportions for Imperata cylindrica (Baimaogen) and Lean Pork Soup, with precise gram measurements recommended for consistent results: – Fresh Imperata cylindrica (Baimaogen) 80–100 g (if using dried, reduce to 30–40 g) – Lean pork 200–250 g – Honey dates 2–3 pieces (approx. 20 g) – Fresh ginger 3 slices (approx. 10 g) – Salt to taste (approx. 2–3 g, added last for seasoning) For best quality, select fresh Imperata cylindrica (Baimaogen) that is thick, white, and sweet in taste. For the lean pork, choose pork loin or shoulder—low in fat and tender. Blanch the pork first to remove any unpleasant odor.

If you wish to support the body’s natural cooling and dampness-balancing functions, you may add 30 grams of fresh Phragmites communis rhizome (Lugen) or 15 grams of Zea mays silk (Yumixu) when making soup. For occasional throat discomfort, you may add a quarter of Siraitia grosvenorii (Luo Han Guo). For occasional skin discomfort, it is recommended to include 20 grams of Coix lacryma-jobi seed (Yiyiren) and 15 grams of Vigna umbellata seed (Chixiaodou). Please note that all medicinal herbs and food ingredients should be soaked in clean water for 10 to 15 minutes before cooking, then rinsed thoroughly to remove impurities and residual dust. For seasoning, keep it light and use only table salt; do not add heavy condiments such as soy sauce or MSG, so as not to affect the naturally clear and sweet taste of the soup.

Cooking Methods

Step 1: Cut the lean pork into 2–3 cm chunks. Place them in a pot of cold water, add 1 slice of ginger and a small amount of cooking wine (about 5 ml). Bring to a boil over high heat and continue boiling for 2–3 minutes. Skim off any foam, remove the meat, and rinse it with warm water. Set aside. This step effectively removes blood and odor from the meat, ensuring a clear soup and pure flavor.

Step 2: Rinse fresh *Imperata cylindrica* (Baimaogen) repeatedly under running water to remove outer root hairs and soil, then cut into 3–4 cm segments. If using dried Baimaogen, soak in clean water for 20 minutes until softened, then rinse twice. Wash the surface dust off honey dates (jujubes) with warm water. Slice ginger into pieces and set aside. Add the prepared Baimaogen, honey dates, and remaining 2 slices of ginger into a soup pot, then add enough water (approximately 1500–1800 ml).

Step 3: Place the blanched lean meat into the soup pot, cover with the lid, and bring to a boil over high heat. Immediately reduce to low heat (maintaining a gentle simmer with tiny bubbles on the surface) and slow-cook for 1.5 to 2 hours. During this time, minimize opening the lid to preserve the beneficial constituents and aroma. Ten minutes before turning off the heat, add an appropriate amount of salt to season, stir well, and continue cooking until the time is up. After turning off the heat, let it rest for 5 minutes until the soup temperature drops to 50–60°C. Use a fine-mesh strainer to skim off any surface oil. Pour into bowls and serve. The lean meat from the solids can be removed and dipped in a little light soy sauce for consumption, while the Imperata root (Mao Gen) and candied dates (Mi Zao) are discarded.

Tips for Consumption

Tip 1: The best time to consume this soup is between 9:00 AM and 11:00 AM (when the Spleen Meridian is most active) or between 3:00 PM and 5:00 PM (when the Bladder Meridian is most active). During these periods, the body’s digestive absorption and metabolic excretion functions are relatively active. Drinking Baimaogen (Imperatae Rhizoma) and Lean Pork Soup helps support its traditional role in maintaining a balanced internal environment by assisting the body’s natural ability to manage heat and dampness. It is recommended to consume it warm on an empty stomach or half-empty stomach, 200–300 ml per serving, 2–3 times per week, for no more than two consecutive weeks. If you wish to continue, take a one-week break before resuming.

**Tip 2:** It is recommended to consume this soup on the same day it is prepared, and it should not be stored overnight. If you prepare a larger batch, you may first remove the unseasoned soup, allow it to cool, then divide it into portions for refrigeration. However, refrigeration should not exceed 24 hours, and be sure to bring it to a full boil again before drinking. Note: Repeated heating may destroy some active components, reducing its beneficial properties and taste. When consuming, avoid eating cold or raw foods (such as ice cream, watermelon, or iced beverages) at the same time, in order to helps maintain cold-dampness from affecting the yang qi of the Spleen and stomach.

**Tip 3:** When making homemade Imperata cylindrica (Mao root) and lean meat soup, you can assess the quality by observing the color and taste: a high-quality soup appears light yellow or pale gold, clear and bright, with a cooling and slightly sweet taste, free from bitterness or a meaty odor. If the soup looks dark, tastes sour or astringent, or appears cloudy, it may be due to stale Imperata cylindrica, overcooking, or excessive heat. Additionally, for children, older adults, or those with weaker digestive function, it is recommended to cook the lean meat until very tender and skim off any surface oil to support easier digestion.