Boost Your Child’s Digestion with Striga asiatica and Crucian Carp Soup

Introduction to Medicinal Diet

In the treasure trove of folk medicinal diets in the Lingnan region, *Striga asiatica* (Asian witchweed) and crucian carp soup is a highly revered classic. *Striga asiatica*, also known as “gan ji cao” (infantile malnutrition herb), is the dried whole plant of *Striga asiatica* (L.) Kuntze from the Orobanchaceae family. It earned its name due to its targeted action and effectiveness in treating infantile malnutrition (*gan ji*). Crucian carp (*Carassius auratus*) is a common freshwater fish in daily life, with tender flesh and a delicious taste. By skillfully combining these two ingredients, the soup not only retains its umami flavor but also acquires unique medicinal value, making it a natural remedy for regulating the spleen and stomach function in children.

This soup’s history can be traced back to folk remedies recorded by Lingnan physicians during the Qing dynasty, and it has been widely circulated in regions such as Guangdong and Guangxi. Local people discovered that boiling *Striga asiatica* (Asiatic Striga) together with *Carassius auratus* (crucian carp) significantly improves symptoms like infantile anorexia, emaciation, and sallow complexion in children. During times of material scarcity, this soup was cherished by many families as a “treasure soup” to stimulate appetite, enhance digestion, and strengthen the constitution of their children. To this day, it remains widely used in medicinal cuisine restaurants and ordinary households in the Guangdong region.

Botanical characteristics of Striga asiatica (Asiatic witchweed)

Striga asiatica (Asiatic witchweed) is an annual, semi-parasitic herb, approximately 10 to 25 cm in height, with a rough, hirsute entire plant. Its leaves are linear, and the corolla is yellow or purple. It commonly parasitizes the roots of Poaceae plants, such as sugarcane and corn, and is frequently found in fields of these crops. Herbalists typically harvest the whole plant in summer and autumn, remove impurities, and dry it in the sun for later use. High-quality Striga asiatica is characterized by thin stems, a gray-black color, and a fragrant aroma.

Efficacy of Medicinal Diet

The core efficacy of Striga asiatica (Indian Striga) and Crucian Carp Soup lies in fortifying the spleen and dissipating accumulation, as well as clearing heat and brightening the eyes. Striga asiatica (Indian Striga) is sweet, bland, and slightly cold in nature, entering the Liver (LR) and Spleen (SP) meridians. It clears heat, dissipates accumulation, calms the liver, and brightens the eyes, being particularly effective for conditions such as infantile malnutrition (gan) with food accumulation, characterized by indigestion, abdominal distension and pain, irritability, emotional instability, and restless sleep. Crucian Carp (Carassius auratus) is sweet and neutral in nature, entering the Spleen (SP), Stomach (ST), and Large Intestine (LI) meridians. It fortifies the spleen and disinhibits dampness, harmonizes the middle jiao and opens the stomach, and activates blood flow and unblocks the collaterals. When combined, these two ingredients complement each other, both clearing internally accumulated heat and gently fortifying and transporting spleen and stomach qi.

From a modern nutritional perspective, crucian carp (Carassius auratus) is rich in high-quality protein, multiple amino acids, and minerals such as calcium, phosphorus, and iron. It is easy to digest and absorb, providing important nutritional support for children during their growth and development. Asiatic witchweed (Striga asiatica) contains active constituents including alkaloids and flavonoids, which exert anti-inflammatory effects, promote gastric juice secretion, and enhance appetite. Therefore, this soup not only improves digestive function but also boosts immune function to a certain extent, offering positive adjunctive support for children’s healthy growth.

The Role of Traditional Chinese Medicine

In TCM theory, children are characterized by “the Spleen being often insufficient and the Liver being often excessive,” a feature of pediatric physiology and pathology. The Spleen governs transportation and transformation and serves as the root of postnatal constitution. Since children’s Spleen and Stomach functions are not yet fully developed, improper feeding or dietary irregularities can easily lead to internal food accumulation, which stagnates and transforms into heat. This in turn disturbs Liver qi, resulting in irritability, night crying, teeth grinding, night sweating, and other symptoms of “infantile malnutrition (gan ji).” Striga asiatica (Du Jiao Jin) enters the Liver and Spleen meridians specifically. It can both clear stagnant heat from the Liver meridian and resolve accumulation from the Spleen meridian, making it an essential herb for treating infantile malnutrition (gan ji).

In this formula, the crucian carp (Carassius auratus) is not merely an ingredient but serves as an important medicinal guide. Sweet in flavor and warm in nature, it supplements the deficiency of Spleen Earth and enhances the Spleen and Stomach’s ability to transport and transform the essence of water and grains. According to TCM, “Earth can support Wood”: when the Spleen and Stomach are robust, Liver Qi naturally becomes calm. Striga asiatica (Asiatic witchweed) clears and drains Liver Heat, while crucian carp tonifies the Spleen and Stomach—one clearing and one supplementing, one draining and one benefiting—together achieving the ideal state of “clearing Heat without damaging the righteous Qi, and supplementing the Spleen without retaining pathogenic factors.” This combination fully reflects the wisdom of TCM in “treating disease before its onset” and “preventing disease progression after its onset,” making it especially suitable for children with a mildly internal Heat due to indigestion but who have a deficient constitution.

Key Points of Pattern Differentiation for Gan Ji Pattern

Gan ji is a pediatric disease entity unique to Traditional Chinese Medicine, mainly characterized by emaciation, sallow complexion, sparse hair, abnormal appetite (anorexia or polyphagia with easy hunger), irregular bowel movements (either dry and hard or loose and thin), abdominal distension, and restlessness. Clinically, it is commonly divided into three stages: Gan qi (mild malnutrition), Gan ji (severe malnutrition), and Gan gan (dry malnutrition). The Striga asiatica and Crucian Carp Soup is more suitable for children in the early to middle stages of Gan ji presenting with the pattern of internal heat due to food accumulation, manifested as poor appetite, foul breath, sour and foul-smelling stools, heat in the palms and soles, and restless sleep at night.

Indications

This medicinal food is primarily suitable for the following groups: First, children aged one year and above, especially those presenting with symptoms of poor appetite, picky eating, post-meal abdominal distension, and dry or sour-smelling stools indicative of indigestion. Consuming it once or twice a week can effectively stimulate appetite and resolve food accumulation. Second, adolescents with Liver Qi constraint and loss of appetite due to academic stress or emotional fluctuations, who exhibit irritability, dry mouth, bitter taste, and lack of desire to eat. Third, adults with Spleen and Stomach deficiency complicated by internal Damp-Heat, characterized by epigastric distension and fullness, a sticky sensation in the mouth, a heavy feeling in the body, and unsatisfying bowel movements, may also take it in appropriate amounts.

For breastfeeding mothers, if the baby shows signs of “excessive internal heat” through breast milk—such as excessive eye discharge, yellow urine, or irritability and crying—the mother may drink this soup in moderation to help clear heat through her milk. However, it is important to monitor the baby’s response; if diarrhea occurs, discontinue use. Additionally, this soup is suitable for summer and autumn consumption, when hot weather often causes children to experience “summer languor” (loss of appetite). A bowl of refreshing Striga herb and crucian carp soup can help stimulate appetite and refresh the mind.

Contraindicated Populations

Despite the mild nature of Striga asiatica (独脚金) and crucian carp (鲫鱼) soup, it is not suitable for everyone. The following groups require special attention: First, it is contraindicated in cases of severe Spleen and Stomach Deficiency Cold (脾胃虚寒). Such children or adults present with loose stools containing undigested food, cold abdominal pain that worsens with pressure, pale complexion, and a pale, puffy tongue with a white slippery coating. Striga asiatica (独脚金) is slightly cold in nature, which can aggravate Deficiency Cold symptoms and worsen diarrhea. Second, it should be avoided by individuals with fish allergies. Those with a clear history of allergy to crucian carp or other freshwater fish should not consume this soup. Lean meat can be used as a substitute for crucian carp when preparing a similar soup. Third, it should be used with caution during common cold with fever (感冒发热).

During the acute stage of externally-contracted fever, especially in cases of wind-cold common cold (marked by severe aversion to cold, mild fever, absence of sweating, and clear nasal discharge), this product should not be taken, as its cold and cool nature may block the pathogenic qi, causing the pathogen to sink inward. Additionally, infants under one year of age have an underdeveloped digestive system, and it is not recommended to introduce such medicated soup prematurely. Pregnant women should also exercise caution; although crucian carp has a calming effect on the fetus (fetal qi), *Striga asiatica* (Asian Striga) has the action of clearing heat and dissipating accumulations, which may potentially affect fetal qi, and its use is not advised unless necessary. If it is indeed required, it must be used under the guidance of a professional licensed TCM practitioner.

Ingredient Formula Ratio

The following is the precise recipe for one serving (suitable for one child or adult): 5 g of dried *Striga asiatica* (Asiatic witchweed) (or 15 g if fresh *Striga asiatica* is used), 1 live crucian carp (*Carassius carassius*), approximately 150–200 g (ideally around 150 g each, medium-sized with tenderest flesh), 1–2 pieces of honeyed jujube (*Ziziphus jujuba*, about 15 g), 3 slices of fresh ginger (*Zingiber officinale*, about 5 g), 1 small piece of aged tangerine peel (*Citri Reticulatae Pericarpium*, about 2 g), and appropriate amount of salt (about 1–2 g, adjusted to taste).

If two to three people in the household are drinking this decoction together, the ingredients can be doubled proportionally: Striga (Striga asiatica) 10 g, crucian carp (Carassius auratus) approximately 250-300 g (1 fish), honey dates (Ziziphus jujuba) 3 pieces, fresh ginger (Zingiber officinale) 5 slices, tangerine peel (Citri Reticulatae Pericarpium) 2 g, and salt to taste. It must be emphasized that the dosage of Striga should not be excessive: for adults, a single dose should be limited to 10-15 g, and for children, 5-8 g. Overdose may cause mild diarrhea or abdominal discomfort. When selecting Striga, choose dry specimens with a gray-black color, a clear fragrance, and no impurities. For the crucian carp, choose live, fresh fish with intact scales and bright red gills.

Cooking method

Step 1: Preparation. Quickly rinse *Striga asiatica* (small broomrape) under clean water to remove surface dust, then soak in clean water for 10 minutes to soften and facilitate the release of medicinal properties. Scale, remove gills and viscera of *Carassius auratus* (crucian carp); thoroughly scrape off the black membrane inside the belly (the main source of fishy odor), then pat dry the fish inside and out with kitchen paper towels. Slice *Zingiber officinale* (ginger). Soak *Citri Reticulatae Pericarpium* (tangerine peel) in warm water until soft, then scrape off the inner pith. Rinse *honeyed Ziziphus jujuba* (honeyed jujube) and set aside.

Step 2: Pan-Fry the Fish to Set the Shape. Take a flat non-stick pan, heat it over medium heat, and add a small amount of cooking oil (about 5 ml). Place the crucian carp (Carassius auratus) in the pan and pan-fry over medium-low heat. First, fry one side for about 2–3 minutes until golden brown, then gently flip the fish with a spatula and fry the other side for the same duration. The purpose of frying is not only to remove any fishy odor and enhance the aroma, but also to help the fish soup achieve a milky white color, improving both the appearance and flavor of the broth. Avoid flipping too frequently, as this may damage the fish skin and affect the presentation.

Step 3: Decocting the medicinal soup. Place the pan-fried crucian carp into a clay pot or soup pot, add the pre-soaked Striga asiatica (Indian paintbrush) together with the soaking water, and add ginger slices, Citri Reticulatae Pericarpium (tangerine peel), and honeyed jujubes. Pour in a sufficient amount of boiling water (approximately 800 to 1000 ml) all at once. Note that boiling water must be used—this is key to achieving a milky white broth. Bring to a boil over high heat, skim off any foam, then reduce to low heat and simmer gently for 35 to 40 minutes. During simmering, avoid opening the lid frequently; maintain a gentle simmer inside the pot.

Step 4: Seasoning and finishing. Once the cooking time is up, use a slotted spoon to remove the crucian carp and the herbal residue (the fish bones will have softened and can be discarded). The soup will now appear milky white, clear and bright. Add an appropriate amount of salt to season, stir well, and turn off the heat. Since Striga asiatica (Dujin Jin) itself has a slight bitter-sweet taste, the jujube dates and tangerine peel (Chenpi) have already balanced the flavor, so no additional seasonings are usually needed. Ladle the soup into bowls and drink while still warm. The fish meat can also be eaten, but care should be taken to remove the tiny fish bones.

Drinking Tips

1. Frequency and Timing of Administration. For daily regulation, it is recommended to drink 1 to 2 times per week, with a course of treatment lasting 2 to 3 consecutive weeks, followed by a 1-week break before resuming. The optimal time is 30 minutes before meals or 1 hour after meals. Taking it on an empty stomach facilitates absorption of the medicinal effects. However, for children with particularly weak Spleen and Stomach, it is advised to take it after meals to reduce irritation. Do not drink it right before bedtime, to avoid increased nocturia that may affect sleep.

2. Individualized adjustment and observation. Each child has a different constitution. When administering for the first time, start with a small amount (approximately 50 ml) and observe for any allergic or adverse reactions. If symptoms such as rash or diarrhea occur, disuse immediately. The decoction of Striga asiatica (Asiatic Striga) has a slightly grassy aroma, and some children may not be accustomed to it. To enhance sweetness and palatability, a small amount of corn kernels or carrots may be added and cooked together in the decoction, but avoid adding excessive seasonings.

3. Storage and Reheating. This soup is best consumed freshly prepared for optimal flavor and efficacy. If a larger quantity is made at once, the remaining broth can be strained and stored in a sealed container in the refrigerator, but should not be kept for more than 24 hours. When reheating, bring it to a full boil, but avoid repeated heating to prevent bacterial growth. Important reminder: Medicated diet soups cannot replace formal medical treatment. If a child presents with severe malnutrition, persistent fever, or developmental delays, seek medical attention promptly and receive comprehensive treatment under a physician’s guidance.