Answer:
I wear a red robe, with staff in hand, and a stone in my throat.
You throw away the outside and cook the inside. Then you eat the outside and throw away the inside. What did you eat?
During the 1800's these turned women into hourglasses and is becoming more popular again these days
Iron roof, glass walls, burns and burns and never falls.
My first keeps time, my second spends time, my whole tells time.
You use it between your head and your toes, the more it works the thinner it grows.