History
The AOC system was established in 1935 by INAO (Institut National de l'Origine et de la Qualité) in response to widespread fraud. Châteauneuf-du-Pape was the first appellation to establish its own rules, in 1936.
What AOC Regulates
Each appellation's decree (cahier des charges) specifies:
- Geographic boundaries — precisely mapped vineyard areas
- Permitted grape varieties — and minimum/maximum percentages
- Maximum yields — to ensure concentration (e.g., 35 hl/ha for Grand Cru Burgundy)
- Minimum alcohol — reflecting expected ripeness
- Viticultural practices — pruning methods, planting density
- Winemaking rules — aging requirements, chaptalisation limits
AOC to AOP Transition
In 2009, France aligned with EU regulations, replacing AOC with AOP. In practice, both terms are used interchangeably. French labels still commonly display AOC.
Quality Tiers
The French quality pyramid:
- Vin de France — basic table wine
- IGP (Indication Géographique Protégée) — regional wine with more flexibility
- AOP/AOC — the highest level, with strictest rules