Acai (prounounced ah-sigh-ee) is a little purple power berry that hails from the Amazon Rain Forest and is considered to be one of the most powerfully anti-oxidant and nutritious super fruits on the planet. One of the most nutritional fruits of the Amazon basin (New York Times, 2004). The Acai berry was made famous as one of Oprah's Top Ten Superfoods. In it's Raw, freeze-dried powder form it is delicious in smoothies, shake, cakes, jams, energy bars and chocolate. Gluten-Free. Some of the properties of Acai Berry: