Hello, I'm a confectionery expert with a keen interest in the shelf life of various sweets, including jelly beans.

Jelly beans, like most candies, are designed to have a relatively long shelf life. However, they can still go bad over time. The primary factors that contribute to the spoilage of jelly beans are exposure to moisture, fluctuations in temperature, and contamination.

When jelly beans are properly stored in a cool, dry place and sealed in an airtight container, they can last for up to a year or more. However, if they are exposed to moisture, they may start to become sticky or dissolve.
Fluctuations in temperature can also cause the sugar to crystallize, which affects the texture and taste. Additionally, if the jelly beans come into contact with contaminants, such as bacteria or foreign substances, they can spoil.

It's important to note that while the candy may not be harmful if consumed after its best-by date, the quality and taste will likely have deteriorated.

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Of course, jelly beans will last for a shorter period of time if it is not stored properly. ... Because of this distinction, you may safely eat your jelly beans after the best by date has expired.read more >>