We went to the Mormon cannery to purchase some staple foods. We ended up with a 1 year's supply for 1 person to compliment our current food storage. I included a link below that shows what they recommend for 1 year 1 person supply. I also put a link below so you can order this online if you don't have a cannery near you.
Purchase Online: https://store.lds.org
BYU.edu (1 year for 1 person suggestion) Once at the site, search "food" on their site): http://ndfs.byu.edu
