Jetboil Flash

The Jetboil Flash boils a liter of water in 100 seconds flat, making it the fastest stove on this list. Its integrated cup-and-burner system nests into itself, taking up less space than a Nalgene bottle. The color-changing heat indicator on the neoprene sleeve tells you when water is ready without lifting the lid. It’s 50% faster than the average camping stove, and it outperforms #3 in fuel efficiency, using 1.5 ounces of fuel per liter. For coffee-dependent backpackers, this is the single most important piece of gear in the pack.