Nebbiolo is the great black grape variety of Piedmont and is responsible for some of the finest and longest-lived wines of Italy. This grape is used to make the wines of Barolo, Barbaresco, Gattinara, and Ghemme. These lightly colored wines are massively tannic when young, and the nose is commonly likened to tar and roses. As the wine ages and matures it develops complex aromas of tar, earth, violets, cherries and wild herbs. Nebbiolo is a very finnicky grape and is difficult to grow. No successful examples of Nebbiolo are available outside its home in northern Italy.