Yeastiness is often a flaw in wine, but it's an asset in these, like Perrier-Jouet
The house was founded in 1811 by Pierre-Nicolas-Marie Perrier-
Jout, and produces both vintage and non-vintage cuvee, approximately 
3,000,000 bottles annually, with its prestige label named Belle ... Jouet mean that 
the next letter t should be pronounced (but softly, like wet).