Congee & Porridge

Water Caltrop and Coix Seed Congee

Traditionally associated with supporting the body's natural defences, digestive function and general vitality

In short: Water Caltrop and Coix Seed Congee is a congee & porridge that Traditionally associated with supporting the body's natural defences, digestive function and general vitality. It is most often made for digestive wellness, energy & vitality, immune support. Total time about 70 min. Key ingredients: coix seed / job's tears.

Prep
10 min
Cook
60 min
Total
70 min
Makes
0.9–1.2 L
Water Caltrop and Coix Seed Congee

Why people make this congee

Water caltrop (ling jiao) is an autumn specialty — a small, hard-shelled aquatic nut whose season is brief. Pre-shelled kernels are widely available and far more convenient; in terms of flavour, eating them from the shell is more satisfying, but the shelled version works perfectly in this congee. In Chinese food therapy, water caltrop has both a traditional and a modern-research dimension: it is traditionally considered to clear heat and support digestive function, and modern research has pointed to compounds in the fruit flesh that may have relevance to cancer biology — including activity against Ehrlich ascites tumour, and components associated with oesophageal, cervical and breast cancer research.

Coix seed (yi mi / Job’s tears) is one of the most widely used everyday health grains in Chinese food therapy. It supports the drainage of excess fluid, strengthens the spleen, nourishes the skin and lungs — and like water caltrop, modern research has identified active compounds (including selenium, coix seed ester and linoleic acid) that are associated with anti-tumour activity. Combining these two ingredients into a simple congee creates a wholesome, easy-to-digest dish that is suitable as a regular health food for the whole family.

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.

  • Job's tears (coix) · Randomized controlled trial · 2024
    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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