bean sauce

Bean sauce is a fermented condiment produced from soybeans or other legumes combined with salt, spices, and sometimes grains, resulting in a thick, umami-rich paste. The most prevalent form is soy bean sauce (often called miso in Japanese cuisine or doubanjiang in Chinese), created through the controlled fermentation of cooked soybeans and salt by beneficial microorganisms including Aspergillus oryzae and Bacillus species. The fermentation process, typically lasting from several months to years, develops complex flavor compounds and enzymes that break down proteins into amino acids. Bean sauces vary considerably by region and production method: Chinese doubanjiang often contains chili peppers and broad beans, Japanese miso ranges from light white varieties to dark red and brown types depending on fermentation duration, Korean doenjang differs in texture and fermentation approach, and Indonesian tauco uses a slightly different legume base and preparation method.

Bean sauce serves as a fundamental seasoning across East and Southeast Asian cuisines, providing savory depth and umami richness to soups, stews, marinades, and dipping sauces. In Chinese cooking, spicy bean sauce (doubanjiang) is essential to Sichuan cuisine and forms the base for dishes like mapo tofu. Japanese miso appears in soups, glazes, dressings, and marinades, while Korean doenjang features prominently in stews and as a table condiment. The ingredient is also used in Asian-inspired Western fusion cooking. Bean sauce pairs well with ginger, garlic, soy sauce, and rice vinegar, and can be incorporated into salad dressings, braised dishes, and as a finishing touch to seafood and vegetables.