Shiraz wine name, there is no proven connection between the city of Shiraz and the modern-day red grape variety "Shiraz", planted in Australia, South Africa, Canada, the United States, and some other countries. Shiraz wine Shiraz wine refers separately to two different well-known wines. Historically, the name refers to the wine produced around the city of Shiraz in Persia/Iran. In the current era, "Shiraz" is a marketing term for Syrah produced in Australia and South Africa. The modern "Shiraz" grape is identical to Syrah and originating in southeast France with no established connection to Persia (Iran). By the ninth century, the city
Phenolic content in wine grapes varies depending on the variety with Cabernet Sauvignon, Nebbiolo, Syrah and Tannat being 4 of the most tannic grape varieties. The reaction of tannins and anthocyanins with the phenolic compound catechins creates another class of tannins known as pigmented tannins which influence the color of red wine. Commercial preparations of tannins, known as "enological tannins", made from oak wood, grape seed and skin, plant gall, chestnut, quebracho, gambier and myrobalan fruits, can be added at different stages of the wine production to improve color durability. The tannins derived from oak influence are known as "hydrolysable tannins" being created from