When I was a boy camping in the Lake Temagami region of Ontario we would bring water to a boil in a large pot, throw in a handful of coarsely ground coffee, and set the pot to the side of the fire so that the grounds could settle. Gently dipping the lip of a Sierra cup or pannican into top layer of the brewed coffee meant that you wouldn't get any grounds. Sugar was optional - I remember drinking it black in those days, along with a couple of rashers of thick bacon and whatever cereal (Red River, Cream of Wheat, Oatmeal) was available. No breakfast was complete without a thick piece of bannock spread heavily with jam and peanut butter. Given that we were probably burning off a couple thousand calories by lunch this was a great way to start the day. Coffee came first, then the bacon, and finally the cereal and bannock. It was always cold and dark with a thick mist over the water and the combination of hot coffee and a warm fire was wonderful.
Best,
Steve