Whole wheat stores for 30 years if stored properly. I get 5 or 6 gallon food grade buckets mylar bags with oxygen absorbers. Seal bags then buckets. You can do this with rice and beans, do not use oxygen absorbers with sugar. Flour will store for about 10 years if sealed properly but I rotate and don’t store too much just in case, powder milk can store for 30 years if stored properly (fat removed). I’ve bought #10 cans from different companies, watch my patriot supply for deals. I don’t do fancy just simple fruits, I grabbed a few eggs (freezes dried ovaeasy crystals) just in case but they don’t store as long. I have buckets of emergency food to grab and go, the 3 month supply but we are a family of 8 so it would work for 72 hour kit. Store water, 5 gallon blue jugs are a great start. Buy just a couple extra of what you use and rotate so you wind up with a 3 month supply of your staples that don’t store long. Rice, beans, sugar, salt, wheat, pasta, canned sauce, freeze dried fruits and veggies, peanut butter, honey, spices, baking powder/soda molasses just think of things you can use if you can’t find other stuff that also may last longer. LDS provident living has great resources.