I keep some of this Parmalat Milk in the pantry. It tastes pretty much like fresh milk and has a great shelf life until opened.

My wife was somewhat reluctant to keep a good stock of food on hand when we got married, but she is coming around to the idea of having most of the basics on hand at all times - it makes for easier shopping. My goal is to generally maintain about a month of food and the means to prepare it on hand for a bug in.