If you are not using an alcohol stove you should be. There are serious weight savings to be made with them particularly on short trips – and of course they are much more environmentally sensitive!
Easy to Follow Instruction here: http://www.ehow.com/how_12340111_turn-soda-cans-portable-camp-stove.html
See also:
http://www.theultralighthiker.com/super-cat-metho-stove/
http://www.theultralighthiker.com/soda-can-stove/
http://www.theultralighthiker.com/diy-side-burner-metho-stove/
Lots more stoves here: http://zenstoves.net/
