Giant Stoneater wrote:
Could you not have cooked something with the leftover gas, it's amazing how much burn time you can get from a little gas.
As al78 suggests, I also usually run the canister till it won't light/ goes out. We'll save the nearly dead ones for car camping where the extra weight etc doesn't matter. I don't think we've ever wasted any. However, you always seem to end up with a tiny bit of gas left so you need to vent or puncture before recycling.