Answer:
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.
This only turns over once you have traveled very far. What is it?
Inside a burning house, this thing is best to make. And best to make it quickly, before the fire's too much to take.
It flies when it's on and floats coming off.
I can be written, I can be spoken, I can be exposed, I can be broken.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?