I have made a couple of stoves from beer cans that burn alcohol. More precisely Heat. They amakere extremely light weight and use approximately 1 fluid ounce of alcohol to boil enough water for a mountain house meal. Boil time for cold water is about 5-7 minutes. The whole idea is to eliminate the weight of a butane canister and to only carry as much fuel as you need. There are some draw backs however. Butane stove are easier and faster to use and the longer your trip is the smaller the over all weight savings is. There are some factory made alcohol stove available.