Soups
Kudzu Root, Coix Seed & Large Fish Head Soup
traditionally associated with clearing heat, promoting circulation, and supporting metabolic health in the context of hypertension, high blood lipids, and high blood sugar
In short: Kudzu Root, Coix Seed & Large Fish Head Soup is a soup that traditionally associated with clearing heat, promoting circulation, and supporting metabolic health in the context of hypertension, high blood lipids, and high blood sugar. It is most often made for blood sugar balance, heart & circulation. Total time about 110 min. Key ingredients: kudzu root, coix seeds / job's tears, ginger.
Why people make this soup
Nourilo was using a large piece of kudzu root to make a simple congee after a bout of stomach trouble, and after using a portion for that purpose, he had a generous chunk left over. Rather than let it go to waste, he paired it with raw coix seeds and a large fish head — a combination that turned out to be both delicious and well-suited to everyday metabolic support. Kudzu (fen ge, or arrowroot in some markets) is the root of a vigorous climbing vine. It is a staple of Cantonese home cooking and is most commonly seen at autumn markets, when its flesh is sweetest. The fish head — ideally a large grass carp or bighead carp head, pan-fried first to remove any fishy odour — gives the broth a rich milky flavour.
What studies say about the key ingredients
Traditional use is not the same as clinical proof. Here is the strongest human research we found for each ingredient, limitations included.
- Kudzu root
The kudzu group reduced intake from 3.0 to 1.9 beers after treatment, while the placebo group rose from 2.7 to 3.4. Kudzu-treated participants also drank more slowly.Limitation: Very small sample (10 per group) with a single dose in a laboratory setting, so results may not carry over to everyday drinking.PubMed 26048637 · 2 more kudzu root studies - Job's tears (coix)
Myeloperoxidase activity rose significantly in the placebo group after 8 weeks but showed no significant change in the adlay tea group. Vascular endothelial function improved in the adlay group, especially in those over 40.Limitation: Participants were healthy adults and the outcomes were surrogate markers, so the results say little about clinical disease outcomes. Tea is a polyphenol-rich extract, not whole grain.PubMed 38945894 · 2 more job's tears (coix) studies - Ginger
Overall, acute and delayed nausea and vomiting did not differ significantly between ginger and control groups. A subgroup taking 1 g/day or less for over four days had less acute vomiting (OR 0.30).Limitation: Clinical heterogeneity between trials required subgroup analyses, and the authors state that sufficiently large, high-quality RCTs are still needed.PubMed 36501010 · 3 more ginger studies
From the Nourilo Research Library. Findings come from specific doses, extracts and populations and may not apply to a home-cooked recipe.
Safety first — read before you cook
This is a traditional food, not a treatment. Please check with your doctor or pharmacist before making it a regular part of your diet if you:
- are pregnant or breastfeeding, or are cooking for a young child;
- take regular medicines — especially blood thinners, blood-pressure, diabetes or immune-suppressing drugs;
- have a kidney, liver or heart condition, or a known food allergy.
Stop eating it and seek advice if you notice an allergic reaction or feel unwell. Safety notes reviewed 8 October 2026 · How we write safety notes
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