Soy sauce in its current form was created about 2,200 years ago, making it one of the world’s oldest condiments. It is a popular complement to many Asian cuisines, including sushi, that lends an earthy, umami flavor. Soy sauce, or shoyu, is made of soybeans, wheat, salt and water, plus “koji.”  The soybeans are soaked, boiled, and combined with the roasted wheat, and then the koji – a mold culture for the fermentation process – is added.  The mixture is […]