Answer:
Ripped from my ancestors home beaten and burned I become a bloodthirsty killer.
I am a food with 5 letters. If you remove the first letter I am a form of energy. Remove two and I'm needed to live. Scramble the last 3 and you can drink me down.
Long and thin red within with a nail at the end.
I am free the first time and second time but the third time is going to cost you money.
Draw fire or fill me; I'm still empty.
In marble halls as white as milk, lined with a skin as soft as silk. Within a fountain crystal-clear. A golden apple doth appear. No doors there are to this stronghold, yet thieves break in and steal the gold.