- Once thought to be related to the Rhône's Syrah, it ends up that Petite Sirah is more closely related to the Southern French varietal Durif, which is virtually extinct in France. On the other hand, Petite Sirah thrives in California, where it is prized for its ink-dark color, rich, peppery, black-fruited tannic wine and ability to age. There is even a group passionately devoted to the varietal called PS I Love You. While often bottled varietally, Petite Sirah is also frequently blended with Zinfandel to give that wine structure, and is usually among the varietals planted in the old vine field blends of Northern California. The grape is also grown with some success is South America - Brazil and Argentina, in particular - and in Mexico.