Welcome to the CellarHand newsletter for March. Let's start with the sparkling, shall we? There's Champagne aplenty this month, most excitingly with the hotly anticipated release of Jacquesson's Cuvée No. 742. Every release of the Chiquets' exquisite fizz is a major event, and this one based on 2014 is sure to set your life alight. There's other great Champagne out, too, from young Pierry hotshot Jean-Marc Sélèque, as well as a new set of Verzenay grand cru wines from the Labruyère family. And, closer to…