Pronounced "ah-sigh-EE" this fruit is small, round, dark purple in color, and very similar in appearance to a blueberry. Native to the Amazon rainforests of Brazil, the acai berry contains more calcium than comparable amounts of milk and more antioxidants than blueberries. It is considered to be a very nutritious fruit providing a sweet flavor that has a chocolate overtone. It is a berry that is added to fruit drinks, such as smoothies and various health-related beverages to increase energy and to provide a variety of beneficial nutrients.