The origins of this tremendously versatile and popular grape are not known for certain, although it is thought to have come from Southern Italy as a cousin of Primitivo. It is the most widely planted red grape in California (though Australia has also played around with the grape). Much of it is vinified into white Zinfandel, a blush-colored, slightly sweet wine. Real Zinfandel, the red wine, is the quintessential California wine. It has been used for blending with other grapes, including Cabernet Sauvignon and Petite Sirah. It has been made in a claret style, with berry and cherry flavors, mild tannins and pretty oak shadings. It has been made into a full-bodied, ultraripe, intensely flavored and firmly tannic wine designed to age. And it has been made into late-harvest and Port-style wines that feature very ripe, raisiny flavors, alcohol above 15 percent and chewy tannins.