There’s a good reason the Merlot of Chile doesn’t taste like other Merlot. Many are not entirely Merlot, but instead a blend of Merlot and a far more exotic grape: Carmenère, a.k.a., The “Lost Grape of Bordeaux.” Carmenère root stock had been transplanted from France over a century ago before the particularly nasty root louse threatened its very existence. Soon forgotten, the Carmenère grapes grew freely with Merlot grapes and were assumed to be Merlot until, suddenly in 1994, viticulturist Jean-Michel Boursiquit revealed the mistake. Oops!
Read all about it here!