Here is a portable Butane gas cooking stove that lets you prepare meals anywhere. The Sonix cooking stove has a heat output of 8000 BTU. It can be used to boil water, simmer sauce, and fry eggs. It has a protective windscreen, so you can even use it in breezy weather.
The unit weighs 3.1 lbs. It has a fully adjustable heat control dial. Costs under $40 at this time.