Bunches are large, spherical and compact with medium-sized purplish black, spherical grapes with thick skins and particular jammy and fruity flavours. This variety is versatile and its quality varies depending on factors like the age of the vine, whether or not production is limited, etc. It generally has a good polyphenol content (making it perfect for long periods of barrel ageing), low acidity (this is usually remedied by blending it with more acidic varieties such as Graciano, Garnacha, Mazuelo, Merlot and Cabernet Sauvignon), and a high concentration of tannins (which allows long periods in oak casks and the bottle and is one of the secrets of its longevity). The wines are usually deep ruby red with aromas of red fruit and berries, tobacco, vanilla and leather. Reservas or Grandes Reservas made from it are generally single-varietal.