So you're worried that a significant percentage of Pinot Meunier will lessen the character of the non-vintage champagne you are drinking.
Here are some non-vintage champagnes with at least 25% Pinot Meunier. All of them scored at least 88 or higher in my own tasting notes (not that anyone needs to agree with them). I enjoyed filtering them from my notes and thought I'd share.
There are surely some memorable blanc de noirs out there that I've yet to try. But, for this list, I tried to keep the criteria limited to non-vintage only and where all three main grapes were blended together.
The first column shows the score I gave, followed by when I opened it, followed by the champagne then finally the approximate percentage of Meunier found in the blend...
94 June 2003 Perrier Jouet Grand Brut 375ml 40%
92 Sept 2004 Pol Roger Brut 33%
91 Oct 2003 Mumm Cordon Rouge 25%
90 Dec 2007 Moet et Chandon Brut Imperial 40%
90 Feb 2009 Piper-Heidsieck Brut 30%
88 Jan 2006 Jacquesson 31%
88 July 2006 Deutz Brut 32%
And while it's not non-vintage, 1996 Krug appears to have 26% Meunier in its blend. I can only hope to taste that one someday!
Jeff
