Blanc de blancs means: white (made) of white. Or: champagne made of chardonnay, the only white grape in the trio of commonly used varieties in Champagne. Pinot noir and meunier are both blue ('black') grapes.
Vintage 2010 Dom Ruinart blanc
Vintage 2011 Empreinte Blanche
Champagne glassware
Vintage 2010 Empreinte Blanche