a small, dark purple, berrylike fruit with a juicy pulp that is often used in beverages or eaten raw and that is produced by a tall, slender palm (Euterpe oleracea) native to tropical rain forests of Central and South America
Acai berry juice concentrate:
— of the species Euterpe oleracea, — frozen, — not sweetened, — not in powder form, — of a Brix value of 23 or more but not more than 32, in immediate packings of a content of 10 kg or more
Acai is high in antioxidants and a number of phytochemicals, though most of the health claims about the fruit—including its value as a weight loss aid—have not been substantiated.
