I watched Bear Grylls extract water from elephant dung as a demonstration, he then drank it.
I went on a course with Ray Mears. We caught and smoked trout, ate a salad made from local leaves with the trout, drank a juice he siphoned off a UK plant (glorious) used utensils he taught us to make. Slept like gods in superb shelters he taught us to build.
If I ever have to survive in the wild again I'm going with the chubby bloke, not the **** drinker.
Wish survival courses in the army had been run by Mr Mears rather than the part trained nutters who ran them while I was serving.
John
Somewhere I've got a photo about this that explained it all, but can't find it now.