White Soy Sauce

White soy sauce, also called usukuchi shoyu, is a Japanese soy sauce that is lighter in color and saltier than traditional soy sauce. It is made using a similar fermentation process with soybeans and wheat, but typically uses less wheat and a higher salt concentration. This results in a less intense color and a sharper, saltier flavor profile.

Manufacturers use white soy sauce primarily as a seasoning and flavor enhancer, especially in Japanese cuisine. Its lighter color makes it ideal for dishes where maintaining the original color of ingredients is important, such as in light-colored broths, marinades, and dressings. It is frequently found in crackers, deli salads, and other savory packaged foods.

White soy sauce is generally recognized as safe by the FDA when used as a food ingredient. As a soy product, it contains isoflavones, which are plant compounds that have been studied for various health effects, though research is ongoing and evidence is mixed. The World Health Organization (WHO) and the International Agency for Research on Cancer (IARC) have not classified soy or its components as carcinogenic. JECFA (Joint FAO/WHO Expert Committee on Food Additives) has evaluated soy products, but no specific ADI (Acceptable Daily Intake) is set for white soy sauce itself.