Popcorn kernels hold moisture inside the hull (shell); unlike normal grains, the hull is very strong and keeps the popcorn tightly kept. Over time, the popcorn kernels will eventually lose their moisture and become dry.
Since popcorn is a living food, meaning it is not pre-heated, then over time, it is possible that the kernels can develop mold. Mold on popcorn may take a year or more to develop.
How long is popcorn good for after the expiration date?
Popcorn holds its moisture for about 6-12 months, so most popcorn you find on the shelf and in microwavable bags has an expiration date of about 8 months. You can eat popcorn after the expiration date, however, going more than 2 months after may result in some very dry popcorn.
Can you still eat expired microwave popcorn?
Yes, although the expiration date is set because eventually the popcorn kernels lose moisture and go dry inside, resulting in stale or easily burned popcorn.
How do you fix stale popcorn?
You can reheat already popped popcorn by placing it in the oven at a lower temperature for a few minutes at a time until you get the right consistency.