At least FOUR.
We were cookin up a little pasta dish the other night and I asked Dave if we could use up the stuff from my house. He pulls this guy out of the cupboard and I knew its sort of old but, wow. Best if used by date? 2008! For pasta!!! You know how many times I've moved and to how many different states!? While this specific box probably spent a lot of time in my parents basement, it's no doubt traveled to at least FOUR states. Holy crap I really should make an effort to keep food items out of the "kitchen" box, yea? :) cheers!