Answer:
Iβm white; perfect for cutting & grinding. For most animals I am a useful tool.
I am a king who's good at measuring stuff.
I am enjoyed by some, despised by others. Some take me for granted, some treasure me like a gift. I last forever, unless you break me first. What am I?
Lighter than what I am made of, more of me is hidden than is seen. What am I?
I go up and never come down no matter how hard you wish. As I get higher, more wrinkles crawl on to the face. What am I?
I flow from the Homerβs mouth when he sees doughnuts.