Cariñena is the same grape as the French Carignan. As in France, it used only as a blending grape, giving additional alcohol and adding structure to the wine. In Rioja, it is called Mazuelo and is sometimes found in blends along with Tempranillo and Garnacha. It is also used in Priorato to blend with Garnacha, Cabernet Sauvignon, and Merlot. There is also a DO and a town in  Spain with the same name.