for La Grande Rue is Pinot noir. The AOC regulations also allow up to 15 per cent total of Chardonnay, Pinot blanc and Pinot gris as accessory grapes, but this is practically never used for any Burgundy Grand Cru vineyard. The permitted base yield is 42 hectoliters per hectare (Change in 2011 from 35), a minimum planting density of 9,000 vines per hectare and a minimum grape maturity of 11.5 per cent potential alcohol is required. See also List of Burgundy Grand Crus References Burgundy (historical region) AOCs