Hi, Megan! I called Performance Foods last year after someone asked a similar question about how long the food stayed fresh. I spoke with either Mary Reilly or Trish Willard (can't remember which), and she told me that their food will stay fresh for about a year if kept in a dry, cool container. She said that the metal popcorn tin I was using was just fine, as would be Tupperware containers, etc. Mary/Trish also noted that the food should NOT be stored directly on a concrete floor (with nothing in between the food and the floor) I think this had something to do with the concrete floor transmitting moisture to the food, causing it to maybe spoil faster? She also noted that they have kept food around longer than one year, had it laboratory tested, and it was *still* good .. but the "official" period for which it can be kept and will remain fresh is one year. Hope this helps! - Ela [Posted in FML issue 2562]