Ambrosia is a (fictional) magical food that is said to be the food of the gods and is only consumed by very powerful people. It is illegal for anyone to own or consume it without permission from the rulers of Empiria. It is said that anyone who has too much will turn into a monster.
The details of ambrosia's components are kept secret by an ancient sphinx, who communicates with the palace through the Holy Order of Knowledge Keepers. Fake ambrosia is often sold on the black market, but is known for nasty side effects.