Consorzio del Vino Nobile di Montepulciano
From the Wine Dictionary of the Epicurious web site:
DOC located in the hilly area around the town of Montepulciano, southeast of Siena in the eastern portion of Italy's TUSCANY region. Its designated zone is precisely the same as the one for VINO NOBILE DI MONTEPULCIANO DOCG. The exact same grapes are used as well-60 to 80 percent Prugnolo (SANGIOVESE), 10 to 20 percent CANAIOLO, and up to 20 percent of other varieties, although no more than 10 percent white grapes. One of the other red varieties most often used is the Mammolo, which contributes the fragrance of violets to the BOUQUET. The AGING requirement is only 1 year instead of the 2 years required for Vino Nobile di Montepulciano wines. The result is that Rosso di Montepulciano wines are fruitier, less intense mimics of their big brothers.