Chambourcin
Chambourcin is a red French hybrid grape that was developed in the early 1960s. It is planted in several states in the eastern US; the top examples come from Maryland, Virginia, Pennsylvania and New York; there are also examples made in Australia, where it sometimes is blended with Shiraz.
The grape has black juice, unlike most red grapes whose juice is clear. Thus a Chambourcin wine has deep purple color; flavors are of plum and black cherry. It is best consumed in its youth (two to three years) for its freshness.