Koikuchi shoyu (濃口醤油) is the classic dark, all-purpose Japanese soy sauce. Brewed by Kikkoman, this shoyu is made from fermented soybeans, wheat, salt, and water, resulting in a deep, savoury flavour known as umami, with a balanced saltiness and a slightly sweet finish. Its versatile profile makes it an essential ingredient in Japanese cooking, suitable for everything from a simple dipping sauce for sushi and gyoza to a base for marinades, glazes, and noodle broths. For a quick weeknight meal, use it to season stir-fries or as a finishing drizzle over grilled fish or steamed rice. This naturally brewed soy sauce is a fundamental component for anyone looking to create authentic Japanese dishes at home. It is a staple in Japanese pantries, valued for its ability to enhance the flavour of a wide range of ingredients without overpowering them. Contains SOY and WHEAT.