Cantonese Master Stock (Lou Shui) — Maintenance Tradition
Guangdong Province — Cantonese and Teochew traditions
Lou shui (卤水) — master stock — is a living culture maintained by Hong Kong and Cantonese restaurants sometimes for decades. The stock, seasoned with soy, spices, Shaoxing wine, and rock sugar, is used to braise successive generations of meats (goose, duck, pork, chicken, tofu, eggs), accumulating complexity from each cooking session. Some legendary lou shui are claimed to be 50+ years old.