I store canned food, and more recently MRE's, but I don't normally eat them daily. So what I do is use them up on my hunting and fishing trips. I typically end up rotating them once a year.

Your idea about storing grains is probably a good one but getting me and my tribe to process them into something edible would be difficult. I think we would all be clamoring for MRE's in short order. Flour, beans, and rice make a little more sense for my situation, and that's something I'm beginning to stock up on. But canned food is going to remain # 1 with me for the forseeable future.

Regards, Vince