I am dark and bitter, but can be milky sweet. I was a luxury for Kings, but now for all to treat. What am I?

People will try to correct you, In fact they all are wrong, Read of my deeds, And you shall see, I WAS the monster, all along

Robin Hood lived in one by the name of Sherwood

I am proof that great things can come from great pressure. A small magnifying glass can be used to show my worth, Lavoisier used a giant one to render it void. Many of these will be given next month - February.

What do Sir Isaac Newton, Steve Jobs, and Eve have in common?