Crémant de Savoie is a new appellation; the first wines were released in December 2015. The blend must be at least 60% Jacquère or Altesse, with a minimum of 40% Jacquère. Chardonnay, Aligoté, and Chasselas are also permitted in the blend.  Perrier's Crémant is 85% Jacquère and 15% Chardonnay. The...