Champagne Boizel Brut Réserve Magnum avec caisse en bois The Brut Réserve cuvée is a blend of three Champagne grape varieties: Chardonnay, Pinot Noir and Meunier. The grapes for Brut Réserve come from some thirty crus, and are harvested exclusively from the first press. To the clear wines of the year are added 40% reserve wines, kept in vats since the two previous harvests.