The short answer is technically no, syrup does not expire.
According to the experts at Ben's Sugar Shack, who produce syrup in New Hampshire, pure maple syrup does not expire due to its high sugar content. This high concentration of sugar acts as a preservative, preventing microbial growth that typically causes food to spoil.
While syrup technically doesn't expire or go bad in the sense of becoming unsafe to consume, its quality can degrade over time, particularly if not stored properly. For example, mold can potentially grow on the surface if the syrup is exposed to contaminants or stored in a humid environment. However, the core characteristic remains its indefinite shelf life from a safety perspective thanks to its natural composition.
Therefore, you can typically store pure maple syrup for extended periods.
