What Happens To Unrefrigerated Soy Sauce?
If left unrefrigerated, soy sauce can still be safe to consume for several months as it has a high amount of sodium and preservatives. However, over time the quality and flavor of the soy sauce may deteriorate due to exposure to light, heat, and air. It may become darker in color and develop a less pleasant taste. It is recommended to refrigerate soy sauce after opening to maintain its quality for a longer period.