1991: AOC system created
The purpose of the Appellations d’Origine Contrôlée (AOC) system is to guarantee the quality and the authenticity of Valais wines. Harvest yields are now limited to set weights per square metre. Quality control systems with checks, regulations and production areas adapted to grape varieties are in place.
Valais wines have an important card to play in the context of freer markets with more imports and greater competition: they are notable for their quality, but also their originality. The 1990s were marked by the return on a large scale of Valais specialty wines, from ancestral grape varieties, wines of great oenological quality that seduced wine tasters from around the world.
1992 harvest certificate showing yield limits