Grinding out level 5 fire

Cooking a moose and working on "Skilled Survivor", really enjoyed this screenshot from a cave in Bleak Inlet.

Also, I've found that if you really need a very fuel-efficient cooking method, having multiple fires going lets you use one stick for like 25 minutes of runtime, since stuff still cooks during "Embers" and pauses for a while afterwards. A pile of sticks can cook a ridiculous amount of meat by doing continuous relights among a bunch of fires. It's a lot of work, but if you're short fuel, it might be worth it.