Answer:
My first half is normally made of stone, my second is crazy, and I taste sweet when complete.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
When set loose I fly away. Never so cursed as when I go astray.
It's got twists and turns, but has no curves. Twist it to fix it, turn it to ruin it. What is it?
I am the heart that does not beat. If cut, I bleed without blood. I can fly, but have no wings. I can float, but have no fins. I can sing, but have no mouth.
Why was the cook arrested?