Designed specifically for portability and almost-instant hot water, the Jetboil Flash Cooking System ($100) is perfect for heating food and beverages on the go. It features a 1.0-liter cooking cup over a FluxRing heat exchanger and an adjustable-flame, push-button burner to create heat in a flash. This compact unit also comes with a neoprene cover with an innovative thermochromic heat indicator, a clear drink-through lid and a translucent measuring cup.