Depending on your location and whether or not you camp out, you need to consider if and how you will be cooking your food. If you use a propane or butane camp stove while hiking and trekking, you can increase its efficiency in cold weather by insulating it from the ground.
* Cut out a circular disk a little larger than the base of your fuel canister from an old computer mouse pad. The extra insulation helps the canister deliver fuel more efficiently.
* Putting a light windscreen around the stove will trap some of the stove's heat and also improve performance.