In 1963, Italy passed a wine law, and in 1992 they added Indicazione Geografica Tipica to make it more like French wine law. So they now have (1) Vino da Tavola, (2) Indicazione Geografica Tipica, (3) Denominazione di Origine Controllata and (4) Denominazione di Origine Controllata e Garantita.
1. Vino da Tavola-Table wines with few controls (no grape name, no vintage)
2. Indicazione Geografica Tipica-The IGT (roughly translated, Typical of the Place Indicated) was defined in 1992 because much of Italy's wine is like the French Vin du Pays or German Landwein. It must tell the region it comes from and it may list a vintage and/or grape type.
3. Denominazione di Origine Controllata-DOC wines (Name of Origin is Controlled) must be registered by the government and must meet approved planting, cultivating and fertilizing methods and these production methods can be spot-checked by the government at any time.
4. Denominazione di Origine Controllata e Garantita--DOCG wines have to meet all of the DOC requirements plus guaranteeing that everything on the label (origin, net contents, grower's name and place and alcohol strength) is accurate. DOCG wines can not only have production methods checked (as with DOC wines) but can also have the wine spot-checked.