The French certification system, abbreviated AOC, that guarantees a wine’s geographic origin and certifies it as compliant with its region’s production rules. Established in the 1930s, it defines where grapes may be grown, which varieties are permitted, maximum yields, minimum alcohol levels, and approved winemaking practices for each appellation, from Bordeaux to Burgundy to Champagne. The system protects both consumers, who can trust that a labeled bottle reflects its place, and producers, whose regional reputations cannot be imitated by outsiders. It became the model for the European Union’s protected designation of origin framework covering cheeses, hams, and countless other foods. Critics argue it can stifle innovation by forbidding grape varieties or techniques that might improve quality, but its role in preserving terroir and tradition is undisputed.