I camped a couple days on my antelope hunt. I have a homemade trail/nut mix in a sandwich bag, I would eat that during the day, save the bag, the next day morning the bag inside the cup to make instant oatmeal. Advantage = no dish washing. I don't like to burn my tongue and the oatmeal was about ready to eat the same time the coffee was drinkable, just about the time I got the tent and bags put up.