Answer:
I'm very tempting, so its said, I have a shiny coat of red, and my flesh is white beneath. I smell so sweet, taste good to eat, and help to guard your teeth.
Slayer of regrets, old and new, sought by many, found by few.
What is that over the head and under the hat?
I wear a red robe, with staff in hand, and a stone in my throat.
In Paris but not in France, the thinnest of its siblings.
If I say "everything I tell you is a lie", am I telling you the truth or a lie?