Does Cinnamon Go Bad?
Yes, cinnamon can go bad. Ground cinnamon has a shelf life of about 6 months to 1 year if stored properly in an airtight container in a cool, dry, and dark place. After that time, it may start to lose its flavor and aroma, and may also become clumpy or develop mold. Whole cinnamon sticks can last for up to four years if stored properly. It’s best to check the expiration date on the package and use it before it goes bad.