D.O.C. stands for "Denominazione di Origine Controllata," which is an Italian quality assurance label for wines. This designation ensures that the wine is produced in a specific region and adheres to strict regulations regarding grape varieties, production methods, and aging. The goal is to maintain high standards and protect the reputation of regional wines. The D.O.C. system was established in 1963 and is part of a broader classification system that includes D.O.C.G. (Denominazione di Origine Controllata e Garantita) for even higher quality wines. Regions like Tuscany and Piedmont are known for their D.O.C. wines, which reflect the unique characteristics of their local terroir.