Expiration & Storage Tips
When does guar gum expire?
Unopened guar gum can last up to 5 years provided it's stored in a cool, dry place away from direct sunlight. Once opened, it's usually best used within a year but can last over two years given proper storage. The printed expiration date can usually be extended given the non-volatile nature of guar gum. However, taste and effectiveness may begin to drop off gradually after the printed expiration date. Even if stored in the freezer, the shelf life remains the same, since it doesn't contain any water that might freeze or alter the product.
How do you tell if guar gum is bad?
To identify if guar gum has gone bad, notice if it has developed an off-smell, something that's not typical for it. Guar gum should have no aroma, so any smell is a bad sign. Additionally, if you see any clumps in the powder or if it has changed its color, this could indicate that the guar gum has absorbed moisture and is no longer good to use.
Tips for storing guar gum to extend shelf life
• Store guar gum in an airtight container to keep it from absorbing moisture from the air.
• Keep it in a cool, dry place out of direct sunlight.
• The pantry is the most ideal place in the house to keep guar gum.
• Remember to seal the container tightly after each use.
• It doesn't need to be refrigerated or frozen, and doing so doesn't extend its shelf life.