Short definition
A wine made from two or more grape varieties mixed together to achieve balance and complexity.
Bordeaux blends Cabernet Sauvignon with Merlot and Cabernet Franc. Châteauneuf-du-Pape can use up to thirteen varieties. Each grape contributes something: one brings structure, another adds perfume, a third fills in the mid-palate. Blending is like cooking — the combination produces flavors none of the ingredients have alone. A blend is not less authentic than a single-varietal wine.