The small milk carton versions are good to go and I would consider double packing them up
to maximize storage time. I like the cartons due not having a larger container open for
extend time. While the protection of the canned versions is superior, that is a bunch
of hash browns you have to use once opened. (unless you re-pack them)
What I found is that if I used boiling hot water to re-dehydrate the dried hash browns
work quite well to fully re-hydrate them. The added benefit of using boiling water it
reduces the cooking time.