Grenache (Garnacha) is a red-wine grape grown extensively in France, Spain, Australia and the United States.It is particularly versatile both in the vineyard and the winery, which may explain why it is one of the most widely distributed grapes in the world.owever, old-vine Grenache grown in schist or stone, such as in Priorat and Chateauneuf-du-Pape, can produce profoundly concentrated wines capable of aging over many decades. Produced as varietal wine, Grenache exhibits rich, spicy, berry flavors, particularly raspberry.