The House of Bollinger only produces vintage champagnes in exceptional years, when the grapes have reached a perfect quality and maturity with a perfect balance between the acids and sugars. Hence the denomination "Grande Année" given to this champagne which, unlike the "Special Cuvée", is only produced from grapes of that particular harvest.
The Bollinger Grande Année remains, however, a blended wine from crus and grape varieties. In this sense it too carries the expression of the House style. However, in this case, the style is also dependent on the characteristics of the given vintage. It is the best wine Bollinger can produce in an individual year by exposing its particular character.