You know it when you smell it.
It is the food item of which you would do anything to take a bite of.
Would you commit a violent savage murder to possess said food?
Hell yes... and you cannot wait to taste the Rh-null all over your face!
Max Dragula is out on the darkened 11:30 P.M. street looking for his midnight meal of human blood.
A sudden heady scent of something rare, desirous and delicious suddenly stopped him dead in his tracks.
He knows what is is because all vampires know, by instinct, when the rarest of blood elixirs is present.
The vampire ambrosia is an Rh-null blood type victim... and, there she is... oh, this is going to be a glorious night!