From the introduction:
Ambrosia is a Role Playing Game for one [Game Master] and one or more Players. Each player will be taking the role of a normal every-day Joe who has come upon a magical drink, a literal elixir of the gods. When drunk from, it gives them access to the a realm of powers he would have never even known.
In addition to standard components, game play requires some atypical components: 20 oz bottle drink for each player, tape, and ruler.