This is how I make my coffee when I'm out in the woods. It's easy, tastes great and doesn't take any special contraption to do it. Just be sure to thoroughly rinse the handkerchief before your trip since you want to make sure it is completely free of any soap. You also want to ensure it's not leaking any dye. Sorry for the shaky video, maybe I'll redo this in the future but for now it should do the trick.