I have learned a couple of tricks while winter camping. The first is to use coolers, close enough to the fire, to keep beer from freezing. The second is to pour water into coffee pots the night before. At minus 15 degrees, once the fire goes out, water containers become blocks of ice. These inconveniences are out-weighed by what you get to experience. This image is from the lake as the lazy morning sun rewards you with a sliver of warmth.