AOC/AOP Regulations
Département
- Maine-et-Loire
Commune of Production
- Rochefort-sur-Loire
Styles and Encépagement
- Blanc: 100% Chenin Blanc
- As of the 2010 harvest, „Grand Cru“ may be added to the label
- Quarts du Chaume wines may include the geographical designation „Val de Loire“ on the label.
Minimum Potential Alcohol
- 18% (11% acquired)
Minimum Must Weight
- 298 g/l (Cryoextraction is currently prohibited by law, but a transitional agreement allows the practice through 2019.)
Enrichment
- Chaptalization is prohibited
Minimum Residual Sugar
- 85 g/l (34 g/l prior to 2011)
- Harvest Method
- Grapes, affected either by passerillage or botrytis, must be harvested by hand in successive tries
Élevage
- Wines may not be released until September 1 of the year following the harvest
Minimum Planting Density
- 5,000 vines per hectare
Maximum Yield (Rendement de Base)
- 20 hl/ha (25 hl/ha prior to 2011)
Principal Soil Type
- sandstone and schist
AOC Established
- 1954 (last updated 2011)
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