Mainly grown in California, this grape is either related to the Syrah grape or to the nearly-extinct Durif variety once grown in France's Rhone region. These are big, deep-colored, full-bodied wines that age well, are high in tannin and have a peppery flavor. Although they are a fine stand-alone varietal, Petite Sirah grapes are often blended with Zinfandel to add complexity.