Seasoning your life. The Kikkoman 3L Bottle Bulk Size Soy Sauce is naturally brewed like wine, from wheat, soybeans, water and salt, a process that takes months, allowing its rich, complex and mellow flavour to develop. Unlike some soy sauces, which are chemically-made in a few days, Kikkoman Naturally Brewed Soy Sauce takes months to make, resulting in a rich, savoury taste.