Tao Jiew — Thai Fermented Soybean Paste / เต้าเจี้ยว

Chinese-Thai — the Chinese immigrant community introduced fermented soybean products to Thailand; they have been fully integrated into Thai cooking over several centuries

Tao jiew (Thai yellow bean sauce) is fermented whole soybeans in salty brine — a Chinese-origin condiment fully integrated into the Thai pantry and used in a number of distinctly Thai preparations. It is the seasoning in pad krapao variations, the sauce base for certain stir-fries (including morning glory stir-fry at some Bangkok restaurants), and a finishing element in moo pad tao jiew (pork with yellow bean sauce). Tao jiew is different from Chinese doubanjiang (spicy) and from Japanese miso (drier, more fermented) — it is saltier, milder, and used more as a seasoning agent than as a paste base. The whole beans provide texture in addition to flavour.

Tao jiew adds a 'Chinese note' to Thai cooking that reflects the deep integration of Chinese culinary culture into Thai cuisine — its soy umami depth operates differently from fish sauce's marine umami, providing a secondary layer of savoury complexity.