Light Soy Sauce

Light soy sauce is a thinner, saltier, and lighter-colored version of traditional soy sauce. It is made through the fermentation of soybeans, wheat, salt, and water, typically using a starter culture of Aspergillus mold. The fermentation process breaks down proteins into amino acids, creating its characteristic umami flavor.

Manufacturers add light soy sauce primarily for its savory, umami flavor and salty taste. It is a common ingredient in marinades, stir-fries, dipping sauces, and salad dressings, especially in Asian cuisine. Its lighter color makes it ideal when a less intense color is desired compared to dark soy sauce.

Light soy sauce is generally recognized as safe (GRAS) by the FDA when used as a food ingredient. It is a significant source of sodium, and high sodium intake is linked to increased blood pressure in some individuals. JECFA has evaluated soy sauce and established guidelines for its use. Some studies suggest a link between high consumption of fermented soy products and certain health outcomes, but evidence is mixed and more research is needed.