Cranberry juice concentrate. The cranberry, Vaccinium macrocarpon, grows wild in eastern North America and is commonly associated with the holiday of Thanksgiving. Cranberries are consumed as whole berries (fresh or frozen) or as the primary ingredients in cranberry juice and cranberry sauce. Fresh cranberries are rich in fructose and the acids citric, quinic and benzoic 1. They are fairly low in calories and are also a source of fiber, bioflavonoids, potassium and vitamin C 2. When compared with a variety of other common fruits, cranberries contain the largest amount of phenolic antioxidants 3.