Answer:
What's black when you get it, red when you use it, and white when you're all through with it?
You throw away the outside, eat the inside, then throw away the inside. What is it?
I am the third from a sparkle bright, I thrive throughout the day and night. Deep in the path of a cows white drink. I've had thousands of millions of years to think. But one of my creatures is killing me. And so the question I ask to thee, is
When they are caught, they are thrown away. When they escape, you itch all day.
Feed me and I live, give me drink and I die.
I start with T end with T and within me is T.