Denominazione di origine controllata (reserve), which may be used only for wines that have been aged at least two years longer than normal for a particular type of wine. Wines labelled DOC or DOCG may only be sold in bottles holding 5 litres or less. For wines produced in Bolzano, where German is an official language, DOC may alternatively be written as "Kontrollierte Ursprungsbezeichnung" and DOCG may be written as "Kontrollierte und garantierte Ursprungsbezeichnung". Denominazione di origine controllata Denominazione di origine controllata (DOC; ; English: controlled designation of origin) is a quality assurance label for Italian wines. The system is modeled on the French
Geographical indications and traditional specialities in the European Union colonised by the fungus "Penicillium roqueforti" that grows in these caves. This system is similar to appellation systems used throughout the world, such as the "appellation d'origine contrôlée" (AOC) used in France, the "denominazione di origine controllata" (DOC) used in Italy, the "denominação de origem controlada" (DOC) used in Portugal, the "denominación de origen" (DO) system used in Spain and the "Denumire de origine controlată" (DOC) system used in Romania. In many cases, the EU PDO/PGI system works parallel with the system used in the specified country, and in some cases is subordinated to the appellation system that was already