In common with many conversions, we have a small gas locker that can only accommodate a Campingaz 907 cylinder. Most of our cooking, aside from toast, boiling pasta, rice, etc., will be done outside of the van on our Cadac, for which we have had an external gas point added to the van running off of the 907. This presents us with 2 problems; relatively small capacity of of gas in the 907 (2.7kg) and the gas (butane) won't be any use outside when the temperature falls much below about 4 degrees. To get around this I want to have a secondary means of cooking. Previously I'd just switch between using butane (907) and propane (calor patio gas) dependant on season and just make sure the bottles we were taking had plenty in them but, checking gas levels is not quite so easy in the van and it seems silly to carry multiple gas bottles around without the protection of the gas locker. I had been looking at small gas canister stoves as backup (room to slot a couple of cans of gas in the gas locker) but again, most of these seem to be butane rather than propane. I'm now wondering about going for an alcohol burner based system, such as Trangia. Am I alone in this "fuel anxiety" or do other campers on here have similar concerns and, if so, what do you use??