Answer:
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
A large oasis in the desert. Come with cash and leave with none. What am I?
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
I am owned by Old McDonald.