There are many models of portable gas stove on the market, from compact designs with one burner, to larger (but still easily portable) four-burner models. At the cheaper end of the market are simple products like the Carena from Camping Gaz. This has a single adjustable 3kw burner, which connects directly to a standard butane gas cylinder, giving about 12 hours of cooking time with the Camping Gaz 907 bottle. Another popular design (which is marketed under a variety of names) consists of a 2kw burner mounted beside the cylinder housing, which uses disposible cartridges. The unit is made from stainless steel and comes with a plastic carrying case.
At the more expensive end of the market you will find portable gas stoves like the Foker Triple Burner. A sturdy cast-iron frame holds three burners which have a higher output (4kw per burner) than the cheaper models. Conveniently it can run on either butane or propane. There are also some great portable gas grills on the market, such as the Weber ‘Q’ range which are always rated highly in reviews.