What is ambrosia? A basic fruit salad plus extras. Some people add sour cream, whipped topping, mini marshmallows, coconut and suddenly, you'd have ambrosia, named after the "food of the gods" in Greek mythology.
However, Ambrosia as it is know today, dates back to the late 19th century and originated in America. One of the earliest printed recipes appeared in a recipe book published in 1877.