The Cabernet Sauvignon grape is a red grape that is one of the world’s most popularly planted grape varieties. The Cabernet Sauvignon is the principal grape in many Bordeaux wines and this grape is featured in many of the world’s greatest and richest wines. Cabernet Sauvignon wine, at its best, can improve its flavor in the bottle over decades and is still drinkable, and even better, after a century.