A trangia with propane gas conversion is great for all sorts of cooking, from reheating in a daze of tiredness to proper cooking with fresh ingredients to warming your croissant while you make your morning's bitter brew. Trangia sell their stoves with a gas burner very similar to the one in the previous post. The whole lot stack packs into something less than the size of half a soccer ball, the small 27 is even more compact. The gas makes a great product even better, adds the ability to control down to a few btu the output of your burner. I usually use the cartridges from the tail gate single burners - very cheap and very widely available here in Europe. It also find the form factor easier to stow and more convenient to use. If one doesn't last at least a week of 2x a day use I am very surprised. The camping/backpacking packaged ones from Coleman or SnowPeak etc are no better, just more expensive by a margin. There are a huge number of resellers of the ISO standardised connecter fitting.