Kudzu Root, Azuki Bean, Coix Seed and Pork Rib Soup

Why people make this soup

Kudzu root is one of the unsung heroes of Cantonese soup-making. The large, earthy root is widely available at Chinese and Asian grocers throughout summer and autumn, and it is particularly well-regarded when the weather is hot and people are sitting in air-conditioned offices all day — the combination of outdoor heat and indoor cold creates a specific pattern of neck stiffness, back tension, headaches, and a dry, irritated throat. Kudzu is traditionally used to promote gentle perspiration, relieve surface tension, cool thirst, and help the body release pathogenic heat outward.

Beyond its traditional reputation, kudzu contains a compound called puerarin (ge gen su), which researchers have associated with dilating coronary and cerebral arteries, supporting blood pressure, and enhancing blood supply to tissues. It also contains trace selenium, an antioxidant mineral. None of this means kudzu cures heart disease — but it is a genuinely interesting vegetable with a broad nutritional profile, and this soup is a satisfying, naturally sweet family dinner that happens to tick a lot of boxes.

Method

1. Peel the kudzu root by tearing away the outer fibrous skin. Cut into large chunks and rinse.
2. Soak and rinse the azuki beans, coix seed, and tangerine peel.
3. Rinse the honey dates.
4. Blanch the pork ribs in boiling water for a few minutes, then remove and rinse.
5. Combine all ingredients in a large pot with 3 L of water.
6. Bring to a boil, then reduce heat and simmer for 2 hours.
7. Serve as a soup — the soup yields approximately 3–4 bowls for 3–4 people.

Nourilo’s Tips

This soup has a naturally sweet, pleasant flavour and is suitable for the whole family — children can drink it freely. Pregnant women should replace the coix seed with lablab beans. If a family member has swollen, hot, red joints along with dark urine, add a large piece of fresh tu fu ling (smooth greenbrier rhizome, about 80 g) to enhance the anti-inflammatory, dampness-clearing effect. This soup is also beneficial for those with mild water retention, as a complement to medical care for conditions involving fluid accumulation.