Once important in Bordeaux and the Loire in various blends, this not-very-hardy grape has been steadily replaced by Merlot and the two Cabernets. However, Argentina is markedly successful with this varietal. In the United States Malbec is a blending grape only, and an insignificant one at that, but a few wineries use it, the most obvious reason being that it's considered part of the Bordeaux-blend recipe.