We often get asked about the shelf life of Kikkoman Naturally Brewed Soy Sauce and how to store the bottle after opening it to preserve the delicious flavour for as long as possible. The best before date on the bottle’s label tells you how long you can safely continue to use the sauce for cooking, dipping, marinating, seasoning or enhancing the flavour of your food.
Once you’ve opened the bottle, it's best to store it in the fridge. This ensures that the Kikkoman Soy Sauce retains its quality for as long as possible. Oxidation, a process that happens as a result of contact with oxygen, turns the sauce darker in colour. Storing the sauce in a low-temperature environment prevents oxidation and allows you to continue to enjoy its full flavour.