Answer:
I'm a ring of sliced onion dipped in batter and then deep fried.
It covers you, you lose it every day and you'd die without it.
He's small but he can climb a tower.
Lovely and round, I shine with pale light, Grown in the darkness, a ladyβs delight.
What is it that you must give before you can keep it
I am a room that has a roof but no walls. What am I?