Does soy sauce have an expiration date and how long does it keep in the fridge?

Soy sauce does not have a strict expiration date, but it can lose its flavor and quality over time. Unopened soy sauce can last for several years if stored in a cool, dark place. Once opened, it’s best to refrigerate it, where it can retain its quality for around six months to two years. Always check for any off odors or changes in appearance before use.