Answer:
The most famous dinner
As a stone inside a tree, I’ll help your words outlive thee. But if you push me as I stand, the more I move the less I am.
Though desert men once called me God today men call me mad. For I wag my tail when I am angry. And growl when I am glad.
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
I am commonly abbreviated to H
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.