JamesSuckling.com's Claire Nesbitt chats with Billecart-Salmon CEO Mathieu Roland-Billecart about the Billecart-Salmon Champagne Les Rendez-Vous de Billecart-Salmon No. 2 Extra Brut NV, a single-release Champagne made from 100 percent pinot noir, 78 percent of which is base wine from 2014, with reserve wines from 2012.