Answer:
My sides are firmly laced about, Yet nothing is withinΝΎ You'll think my head is strange indeed, Being nothing else but skin.
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
I have legs but never walk, I may have flowers but no soil, I hold food but never eat.
I can sizzle like bacon, I am made with an egg. I have plenty of backbone, but lack a good leg. I peel layers like onions, but still remain whole. I can be long, like a flagpole, yet fit in a hole.
It is weightless, you can see it. If you put it in a barrel it will make it lighter?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.