Syrah and named after Dr. Francois Durif. Durif is a cross breed between the lesser known Peloursin and Syrah. Regions such as Rutherglen have achieved international regard for their Durif. This varietal is similar to Shiraz but is even more full-bodied and tannic because of the smaller, thicker-skinned grapes used. Petite Sirah is widely planted in California, where it is popular as a varietal (for example, by Bogle Vineyards), and especially blended with Zinfandel, which results in a rich, bold and fruity wine. Syrah Syrah (), also known as Shiraz, is a dark-skinned grape variety grown throughout the world and used
Phenolic content in wine concentration in the skins of wine grapes. The accumulation in ripe berries of different concentrations of both bound and free resveratrols depends on the maturity level and is highly variable according to the genotype. Both red and white wine grape varieties contain resveratrol, but more frequent skin contact and maceration leads to red wines normally having ten times more resveratrol than white wines. Resveratrol produced by grape vines provides defense against microbes, and production can be further artificially stimulated by ultraviolet radiation. Grapevines in cool, damp regions with higher risk of grape diseases, such as Bordeaux and Burgundy, tend to