Acai (pronounced ah-sigh-ee) are the fruit of the acai palm tree which grows throughout the Amazonian river in south America.They don't last long on a shelf so you can generally find them as frozen form. The oblong, deep purple berries grow in large sprays on fan-like branches. The acai berry is actually just 10% fruit, 10% pulp and 80% seed, making most of the acai actually inedible!
The Açai palm takes 10 to 12 years to bear fruit, but once mature, a single palm can produce thousands of fruits in one season.
According to Mayo Clinic, acai berries may have more antioxidants than other berries: “Acai berries contain antioxidants… They may have more antioxidant content than other commonly eaten berries, such as cranberries, blueberries and strawberries.”