I found a product today at WalMart that I'm adding to my boating supplies:
Hungry Jack Premium Hashbrown Potatoes. Cooks in 5 minutes and comes in what looks like a small milk carton. This is a 4.2 oz cardboard container.
You add the hottest tap water that you can get and fill the carton to the fill line.
Close the carton and let it stand for 12 minutes. Drain well.
Preheat a large nonstick skillet and 2 tbsp oil on 375*F heat.
Pan fry for 3-4 minutes. If there's any left overs put them in the fridge.
Makes 1 lb of Hashbrowns! $1.50 per carton.
There's a use by date of Jan 12, 2012