It was April 2015 when I bought a 50# bag of popcorn and decided to try and store it long term. I divided it out into about 7# bags and put it thru my food saver to pull out the air. A few of the bags initially needed to be re-done since the kernals make it difficult to seal, but after they were all sealed, they stayed that way until I cut them back open. I then put all the sealed bags into buckets with lids and stored them in my cool basement. We're still eating it from that original 50# bag. Sadly, it doesn't taste nearly as good as it did when I bought it. In a SHTF situation, I'd still be really glad to have it, but in normal life, it's much better to have fresh off the shelf popcorn. We eat a lot of it, especially in the winter. It is our go-to snack since the pups LOVE it and it's a much healthier snack than many other choices. However, now I'd say it's stale. It's slightly "chewy" or not as crisp and doesn't pop up as light and fluffy. There are also more grannies left in the whirley pop that didn't pop. The birds still appreacite the grannies though, so I don't waste any of it. In a nutshell, would I do this again? Probably not......unless SHTF was imminent and I had a 50# bag of popcorn laying around. Other than that, I will just put popcorn on my "last dash" list to stock up on, even though I usually keep a few jars in the pantry anyways. Now I just spend the extra money and buy the Orville Redenbacher in the plastic jars. I'd imagine those jars probably store just as well (if not better) than the food saver bags. I'd be curious to know if anyone else has done this and what your results were.