Barolo is a red Denominazione di Origine Controllata e Garantita (DOCG) wine produced in the northern Italian region of Piedmont. It is made from the Nebbiolo grape and is often described as one of Italy’s greatest wines. The zone of production extends into the communes of Barolo, Castiglione Falletto, Serralunga d’Alba and parts of the communes of Cherasco, Diano d’Alba, Grinzane Cavour, La Morra, Monforte d’Alba, Novello, Roddi, Verduno, all in the province of Cuneo, south-west of Alba. Only vineyards planted in primarily calcareous-clay soils in the hills with suitable slopes and orientations are considered suitable for Barolo production. Barolo is often described as having the aromas of tar and roses, and the wines are noted for their ability to age and usually take on a rust red tinge as they mature. When subjected to aging of at least five years before release, the wine can be labeled a Riserva.
Wine is regulated by regional, state, and local laws. The laws and their relative rigidity differ for New World and Old World wines. Old World wines tend to have more stringent regulations than New World wines. Various wine laws, however, may include appellation-based regulations that cover boundaries as well as permitted grape varieties and winemaking practice-such as the French Appellation d’origine contrôlée (AOC), Italian Denominazione di origine controllata (DOC), Spanish Denominación de Origen (DO) and Portuguese Denominação de Origem Controlada (DOC). In some New World wine regions, such as the United States and Australia, the wine laws of the appellation systems (American Viticultural Area (AVA) and Australian Geographical Indication (GIs)) only pertain to boundary specifics and guaranteeing that a certain percentage of grapes come from the area listed on the wine label.