in regards to coffee......at a recent civil war reenactment one of the guys related the way to make coffee.....boil it actually. He said just put the beans in the cup and grind them with the butt of the rifle (or whatever) and add water. Boil until the grinds float to the top. Put in a little cold water and the grinds settle to the bottom. At this point drink it. Yea you have to watch for grinds but it doesn't need a filter. I haven't tried it yet.