Roussanne is white grape from the Rhône Valley. In Australia this variety is made into varietal wines and is often blended with Marsanne, The regions producing the most outstanding wines are Yarra Valley, Rutherglen, McLaren Valley and King Valley.
In the Northern Rhone it can be a hard grape to grow, being difficult to ripen, producing low yields and is susceptible to rot. In Hermitage, Crozes-Hermitage, St-Joseph, and St-Péray it is usually blended with Marsanne. Roussanne adds acidity, floral aromas and delicacy. In the southern Rhone it is commonly used in the blend of Châteauneuf-du-Pape.