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 cannot be seen or felt, but can only be broken by voice?

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: There is an ancient invention still used in some parts of the world today that allows people to see through walls.What is it?