Tonic Drinks & Waters
Kudzu Root, Hyacinth Bean, Mung Bean & Coix Seed Drink
Traditionally associated with relieving tension, supporting blood pressure, and clearing end-of-summer heat from the body
In short: Kudzu Root, Hyacinth Bean, Mung Bean & Coix Seed Drink is a tonic drinks & water that Traditionally associated with relieving tension, supporting blood pressure, and clearing end-of-summer heat from the body. It is most often made for cooling & summer heat, heart & circulation, sleep & calm. Total time about 2 hr 15 min. Key ingredients: kudzu root, mung beans, coix seeds / job's tears, honey dates.
Why people make this drink
Even after the Mid-Autumn Festival, Hong Kong and southern China can remain stubbornly hot — and the body feels it. That end-of-summer heat has a particular quality: muscles feel heavy, the chest feels tight, the mood turns easily irritable, and headaches seem to settle at the back of the neck and across the shoulders. Traditional Cantonese food therapy has a long answer to this feeling, and kudzu root (粉葛, fen ge) is central to it. This starchy root vegetable is widely used in Cantonese soups and, when cooked long enough, produces a drink that is warming and clearing at the same time — not cold and harsh like some bitter herbal teas. Paired with mung beans, coix seeds, and hyacinth beans, it makes a pot that is remarkably easy to drink, earthy, and settling.
Method
- Tear or scrape the outer skin from the kudzu root; rinse under running water and cut into large chunks.
- Rinse the hyacinth beans, mung beans, coix seeds, and dried tangerine peel briefly; drain.
- Place all the ingredients into a large pot. Add 2.4–2.7 L of cold water.
- Bring to a boil over high heat, then reduce to a medium-low simmer and cook for 2 hours until reduced to about 1.2 L.
- Serve warm. The soup can be drunk across the day.
Nourilo’s Tips
This soup is wonderfully fragrant and naturally sweet — no added sugar needed. The key is cooking it long enough (a full 2 hours) so the kudzu breaks down properly and releases all its starchy goodness. Kudzu has a natural muscle-relaxing quality and is associated with calming the nervous system, so when you’re feeling tense and irritable in late summer, this is the pot to reach for. A good one to simmer on a Sunday afternoon and keep in the fridge for the week.
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 - Mung beans
Breath hydrogen and methane were higher after wheat than after rice or mung bean noodles. Bloating scores after mung bean did not differ significantly from wheat, and mung bean produced gas levels similar to rice.Limitation: Small sample of 20 patients, with single meals tested rather than habitual intake, so longer-term effects of mung bean on symptoms are unknown.PubMed 31484315 · 1 more mung beans study - 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
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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