Last year, the big thing in fruit beverages was pomegranate juice. Ads for Pom popped up everywhere, touting the benefits of the antioxidant-rich juice. There was even a dark chocolate-coated Pom flavored ice cream bar, a tasty but slightly schizophrenic blend of antioxidants and trans fats.

Pom's been riding high, but açai (“ah-sigh-ee”,) a berry that grows wild in the Brazilian rainforest, packs such a nutritional punch it could knock Pom off its perch. The Açai Supercharger smoothie is a hot seller at Jamba Juice bars, and açai juices from Sambazon and Bossa Nova are available in stores.