Fuel and light from animals - Tallow

[Mortblanc]

Reed candles, rushlights, are easier to make than regular candles, but not nearly as efficient.

Heat the tallow and soak the rush pith until it is saturated. Any fat or oil will work. It does not have to be high quality tallow or even well rendered or clean.

They burn fast with a lot of smoke and drip ash like a cigarette.

Something that one should know how to make and hope they never have to use.