A few lines first if you haven't heard of the magic and publicity this little berry has been generating.
The Acai (pronounced ah-sah-ee) Berry is native to Central and South America, grown mainly in swamps and floodplains. It has been around now for about 5 years. It grows atop Acai Palm Trees. When harvested the pulp of the fruit needs to be quickly frozen in order to preserve its nutrients. The quality of the berry has been shown to degrade rapidly if not frozen straight away. It's a deep purple colour, about one inch in diameter, similar to a grape but with less pulp. The Palm is also harvested for its hearts of palm' which are often consumed in salads.