I have heard a few different things but for the most part from what I understand you can store brittle dry (break not bend) veggies vacuum sealed in a Mylar bag or Mason Jar for many years if you store it out of light and the right temp. Does that sound about right? I have also read that they only last a year or so but that doesn't necessarily mean they are sealed properly. I know all stored food eventually, slowly starts to lose some nutrients but I am mainly concerned about how long you can store low moisture dry veggies vacuum sealed and in the right environment and still retain a decent amount of nutrients and be edible. A few more questions I have is how long will normal beef jerky last in a vacuum seal ar or Mylar bag? And I have recently started looking into "Hamburger Rocks" (cooked, dehydrated ground beef) also, anyone have a idea how long they would last in the right conditions assuming they have less than 10% moisture? I would think that a lot of this stuff would be similar to Mountain House and some of the other products that have been tested and perfectly fine after 10 or more years in storage, it's not too hard to seal stuff up the right way with the right materials.