I know many hikers love the Jetboil cooking system. But it is so heavy. Ezy Hiker felt the same and reduced the weight for his Jetboil system from 204g (7.2oz) down to 123g (4.3oz). This is the translated version of his posting and you can find his original one in Japanese right here. This is by the way an amazing blog for lightweight gear fanatics and one of my personal favorites.