Hint: Put you lunch (bagel, cheese, salmi,etc) in the insulated lunch bag with a Thermos full of hot soup or tea. Everything will have thawed by lunchtime.

Most stoves come with an aluminum foil wind break which is not sufficient for winter camping. Use a heat chimney which, as well as acting as a wind break, also concentrates the hot air around the sides of the pot rather than just heating the "countryside". My home-made heat chimney was made of light aluminum riveted together. It is 1/2 inch larger diameter than my largest pot and has lots of air holes near the bottom.

DON'T PUT A WHITE GAS BOTTLE OR BUTANE CANNISTER INSIDE A CHIMNEY! Chimneys are only safe with 2 part stoves.