DouchiFermented black beans
Yangjiang in western Guangdong and Liuyang in Hunan are the two great douchi towns, and both traditionally make their fermented black beans in the dry season, when beans can be moulded indoors and dried in the sun without spoiling. Cooked black soybeans are covered until a yellow-green koji mould grows over them, then washed, salted, packed and fermented for weeks before drying. The result is wrinkled, soft-chewy beans with an intense salty, savoury, almost chocolate-dark flavour. A spoonful steamed with spare ribs or a whole fish, stir-fried with bitter melon or pounded into Hunan's chilli dishes seasons the whole plate. At home, buying koji spores (Aspergillus oryzae) is far more reliable than waiting for wild moulds. Common mistake: letting the beans sit wet or warm in a sealed container during the moulding stage; they must breathe at 28–32 °C. Good koji smells sweet and chestnut-like; discard any batch with black, pink or bright coloured mould, slime or a rotten smell. Keep the salt as given. It is ready when the beans are dark, wrinkled and dry outside but supple within. Store dried douchi in the fridge for 1 year. Chef's tip: rinse and lightly crush the beans before cooking.









































