How do you preserve cinnamon?

To preserve cinnamon, store it in an airtight container in a cool, dark place, away from direct sunlight and moisture. Whole cinnamon sticks tend to last longer than ground cinnamon, which should ideally be used within 6 months for optimal flavor. Keeping it in a glass jar or a sealed bag can help maintain its potency. For extended storage, you can also freeze cinnamon, but be sure to keep it in a moisture-proof container.