Answer:
What do you fill with empty hands?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
A precious fluid, thicker than water.
I walked and walked and at last I got it. I didn't want it. So I stopped and looked for it. When I found it, I threw it away.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.