Expiration & Storage Tips
When does onion soup mix expire?
Unopened packets of onion soup mix can last up to two years when stored in a cool, dry place. This is subject to the 'best by' printed date. However, it will not become harmful after this, but may lose flavour over time. Once it has been opened, try to use it within a few weeks for maximum flavour. Onion soups mix isn't typically frozen in households.
How do you tell if onion soup mix is bad?
If the onion soup mix has become moist, clumped together or has a smell that is off or different from its normally pleasant oniony aroma, it might have gone bad. Also, if it's past the 'best by' date and has been opened for a prolonged period, it might not necessarily be bad, but could have lost flavor.
Tips for storing onion soup mix to extend shelf life
• Always store onion soup mix in a cool, dry place.
• After opening, seal it tightly to avoid moisture getting into the packet.
• Onion soup mix keeps well in an airtight container, which also helps prevent moisture absorption.
• Although not common, you can freeze the mix in a sealed bag if you want to extend its shelf life beyond the typical timeframe.
• Always check the 'best by' date before use.