Seems like paraffin wax is the highest energy commonly found solid fuel. The problem might be that it needs a wick to burn and light easily. Some testing on best type of wicks is in order.
I thought in England it was rushes that were used at the one end. We need someone who makes natural lights and candles who experiments with these things. I wonder what nettle sting used as a wick would be like? I bet this is one of those things that we do not know because no talked about it and there is no evidence left.Inuit people light, heat and cook over elongate seal blubber quilliq (kudlik)
soapstone fire dishes. As the fat melts from the first flame, wick after wick is lit in the elongate trough-like stone dish. Like paraffin wax, the fat solidifies for convenient transport when needed. Any hydrocarbon organic will yield more energy that alcohols can. Hence the use of animal fat. Very stinky but at -30C, I'll never object.
The best wick material is some sort of lichen, not "reindeer moss" per se but similar to that. I've used our local cotton grass and also spruce twigs smashed to fiber as similar to candle wick. Neither lasts very long (30 minutes) before being consumed.
If you want to do local experiments, I'd collect and dry some foliose or fruticose lichen which could be fashioned into a wick-like object.
I think we did use animal fat. Our ancestors must have lived with nothing wasted. There is something else apart from animal fat and bees wax and for the life of me cannot remember it.Performing our own experiments is a very healthy thing to do. Then we know what to look for, what questions to ask, to move ahead. For the sake of convenience, I suppose that any hydrocarbon wax can represent our collective lack of seal blubber. What about rendered fat? Lard?
LOL yes I said it I think.This must have come up before: why a survival tin? In military context I can understand it but in civilian activities when does one lose all things so that a survival tin is necessary. Normally when I am trekking I already have most things double in my back pack and coat pockets.
I don't carry any food in my pockets but fire lighting and knives are on my person. In Finland if I have a map and compass I am at the most one day's walking away from a road, mostly a few hours. I know I can easily live a few days without food and here water is always available.
Keeping warm can be a challenge at times but a tin does not really solve that if I am not properly dressed for the occasion.
My "tin" has some special medication, first aid, fire lighting, a small compass and a small edge in case I have really F****D up and need to "escape". At the moment I am considering the various options for energy bars in case I have goofed my navigation too.