What gives the blueberry a distinct flavor?
It is thought that volatile and semi-volatile organic compounds present exhibit a tremendous influence on the flavor/fragrance qualities of blueberries. Check out a paper titled: Volatile Organic Composition in Blueberries by Stantford Overton and John J. Manura which can be accessed directly on line at: http://www.sisweb.com/referenc/applnote/app-43.