Let's take four high-end champagne makers, which, as we have established, must be French firms. They are, with lead brands in parentheses, Laurent- Perrier (Larent-Perrier), LVMH Moet-Hennessy (Dom Perignon, Moet & Chandon and Veuve Cliquot), Remy Cointreau (Piper-Heidsieck) and Taittinger (Taittinger). Each of these firms has outperformed the French CAC-40 index since LVMH Moet-Hennessy began trading in June 1999