Expiration & Storage Tips
When does monosodium glutamate expire?
When kept in a cool, dry place, away from heat and sunshine, MSG is highly stable and can last for several years if unopened. Once it has been opened, its quality remains most stable when stored under the same conditions, but it will start to degrade after about a year. If you've thrown out the original packaging without noting the 'best by' date, you should discard and replace your MSG after a year for optimal flavor potency. This product generally does not freeze or get homemade.
How do you tell if monosodium glutamate is bad?
It can be quite challenging to tell if MSG has gone bad since it's a stable compound. However, if not stored correctly, it can clump, change in color or develop an off-odor. You should discard it in such a case. Also, if your dishes seem to lose the flavor boost you're used to getting with MSG, it might be a sign that it has lost its potency over time, and you might want to replace it.
Tips for storing monosodium glutamate to extend shelf life
• Always close the MSG container tightly after use.
• Store your MSG in a cool and dry location. A pantry or a cool cabinet away from the stove or oven is an ideal location.
• Do not store it near strong-smelling food or spice as it might absorb the smell.
• Consider transferring MSG to an airtight container if you're using a large economy-size container that might not maintain its freshness for a year once opened.
• Double-check that your hands or measuring spoon are dry before scooping some out. You want to avoid introducing moisture, which promotes clumping.