Black soybean (黑豆)
Basics
- Latin name:Glycine max
- Common names:Black bean, hei dou
- Nature:Sweet, neutral
- Part used:Seed
Uses
- Tonifies kidney yin, moves blood and water, resolves toxicity
- Traditional “grain of kidney” / black foods for kidney care (syndrome differentiation)
Harvest & storage
Harvest ripe seeds in autumn; dry. Cook thoroughly for food use.
How to identify
Spherical or slightly flat black seed with white linear hilum.

