Yeah,. I think it's made from dried kangaroo droppings, dried and lightly roasted over a hot coal camp fire and then ground to a coarse powder using the legbone of a dead roo. It has an unusual almost herbal flavour.
That's probably why you had it on your camping trip. It was the only one available at the time.
You can still pick up the raw ingredients in the paddocks and make it yourself.
You might find it doesn't taste quite so nice if you don't spend the previous night on the Jack Daniels.

( oh, and before someone tries it,..

)