Riddle

Question: Oh how you love me: to some I'm a must. But to get what you need, you grind me to dust. I am dark and bitter, and when I'm white I lack meat. In winter you drink me, and in spring I'm used in a feast. I am a tree of summer and in autumn I'm a gift on an eve, while all year round I'm quite the reprieve. What am I?

Question: What tastes better than it smells?

Question: What goes in the water black and comes out red?

Question: What asks but never answers?

Question: To many, I am life's source. I am also its most valuable resource. I create and burn my own precious element, and my destruction will be my punishment. What am I?

Question: I have 6 faces and 21 eyes, but can't see a thing. What am I?