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. 

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.