Tamari soy sauce is a type of shoyu, the Japanese word for “soy sauce.” The technique for making tamari is quite distinctive, yielding a complex, rich flavor which some people find very enjoyable. Many Asian markets stock tamari, and it can also be found at general stores which stock Asian ingredients. True tamari has a very dark color and an almost smoky flavor, and it can be used as a dip, marinade, or baste; it is also used as a component in other sauces and dips.
Tamari is made by collecting the liquid which drains from miso as it ages. Miso is a fermented soybean paste which is a major component in Japanese cooking; miso appears in soups, stocks, sauces, and a wide variety of other foods. It is also made with a range of grains, yielding an array of textures, flavors, and feels. In Japan, tamari soy sauce production is focused in the Chubu region, where it is also known as miso-damari.