What are the primary grape varieties used in Bordeaux red blends?

Bordeaux red blends are usually produced using Cabernet Sauvignon, Merlot, Cabernet Franc, Petit Verdot, and Malbec grapes. Each variety contributes distinct characteristics: Cabernet Sauvignon gives the structure and tannins, Merlot provides the body and fruitiness, Cabernet Franc brings the aromatics, Petit Verdot adds the color and spiciness, and Malbec makes the complexity. These grapes are skillfully blended by the winemakers to produce balanced and complex wines representing the Bordeaux region.
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