Smoking is a good way to preserve fresh meat/fish for a long time. It's quite easy, you need to control the salting and temperature only.
When outdoors, it is preferred to build a pyramid-shaped smoking set with three wooden sticks.
Inside the smoking set, make a table to put foods on. Then wrap over the whole pyramid with grass, cloths or skin.
Quoted and translated from "200 Surviving Techniques Useful in Outdoors"