Jetboil Sumo Group Cooking System

It makes no sense to top off a hard day climbing with a lot of hard work cooking, so the new Sumo “Group Cooking System” (hate that term) by Jetboil looks to be pretty amazing. It just came out, so we haven’t tried it in the field yet, but the core pieces only weigh a pound, and it’ll boil a liter of water in about 4 minutes. The guys behind it figured out that a better cooker depended on improving the heat transfer, and their products are catching our attention.