A:Weight savings in stoves come from super-efficient designs that reduce the amount of fuel you need to pack. Leading the way is the Jetboil Flash ($100), which consists of a burner and an integrated cookpot. It’s so efficient it can boil 11 liters of water with a single 100-gram butane canister. MSR’s Reactor ($159) boils less water per fuel canister, but its larger pot size is more practical for two or three people.
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