Witnessed by: TCM

Sheep kidney (Ovis aries), of the Bovidae (Mammalia) family. The domestic sheep, a woolly hoofed ruminant kept for meat, milk and wool; native range: the domestic sheep, kept throughout China, Mongolia and central Asia; the kidney taken at slaughter. Globally recognized as yang yao zi (羊腰子) in Chinese, and sheep kidney, mutton kidney in English. The part used is the kidney, taken in pairs and used fresh. A dark red-brown bean-shaped organ, the cut face showing pale lobes about a white core, with a strong urinous smell that washing and roasting take off.

In this cross-tradition database, we analyze how this substance operates across world medicine systems — tracking its traditional tastes, temperatures, tissue affinities, post-digestive effects, and planetary correspondences across Ayurveda, Unani, and Western herbalism.

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