High quality japanese soy sauce is a reddish-brown shoyu with a rich fragrance and without saltiness, this soy sauce tastes great when paired with tofu, pickled vegetables, and sashimi.
Japanese soy sauce, or shoyu, also comes in both dark and light varieties, but Japanese dark soy sauce is actually more similar to Chinese light soy sauce in that it’s more often used in cooking.
Premium Japanese soy sauces that are made from fermented soybeans, wheat, salt and water. In general, they are quite thin and clear and are a good all-purpose cooking and table sauce.