Smash the nut repeatedly against a sharp rock
and again...
and again.......
Try to make cuts from end to end
After a while, try to tear of pieces og the outer layer
First piece is the hardest...
Remove all of the outer layer
You now have a small hard core
Crack it like an egg
A very hard egg....
And open carefully, not spilling the milk
Voilá
Another taste of fresh jungle survival!