Second, check the ingredients list. Kikkoman Naturally Brewed Soy Sauce is made from only four natural ingredients: water, soybeans, wheat and salt. These ingredients are fermented and brewed. Take a closer look at the brewing process, to understand how only a few ingredients can produce such a variety of flavours.
Sometimes other brands have seven or more ingredients. Why? It is because they need more ingredients to make their products faster, cheaper and the taste acceptable.