Cabernet Sauvignon, Merlot, Cabernet Franc, Malbec and Petit Verdot. These five red grapes are the components of a classic Bordeaux blend. Cabernet Sauvignon and/or Merlot usually play the lead role, while Cabernet Franc, Malbec and Petit Verdot act as the supporting cast. These three grapes help to add colour, structure and body in varying amounts. A Bordeaux blend typically, but not exclusively, uses at least three of the five grapes to be labeled as such, but many wines in Bordeaux and elsewhere stick to just two. The beauty of the blend? Each year the percentage of each grape in the blend can vary and the winemaker can include more of the variety that excelled in that particular vintage.