Choosing the right South American wine

Malbec originates in Cahors in SouthWest France where it is more often known as Cot — the word Malbec comes from the man who introduced it to the Côtes de Bordeaux region.
DNA analysis has shown that Malbec is a half sibling to Merlot, the grape that largely supplanted it once the vineyards of Bordeaux were re-planted after the devastation of Phylloxera.