The wine world has always made a point to differentiate its various different terroirs, as the differing conditions of site, soil, temperature, aspect, sunshine, rainfall and a myriad of other factors have a big influence on the wines that different terroirs produce. Across the world it is well known that different sub-regions produce different styles of wine, and, perhaps even more importantly, different quality levels of wine. These sub-regions are generically referred to as Geographical Indications or GIs. Across the world, these GIs have more local names. In France they have the AOC (Appellation d’Origine Controlee) system, Italy has Denominazione di Origine Controllata e Garantita (DOCG) and two others, and the US has the American Viticultural Area (AVA) designation.
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