L'ÉCRIN BY MICHALAK FROM 8 - 23 December 2017, CARTIER CELEBRATES THE MAGIC OF THE FESTIVE SEASON and unveils L’ÉCRIN by Christophe Michalak.   A hidden door on the second floor of the Cartier boutique in Geneva reveals a private parlour overlooking the lake, transformed into a pop-up tea room – L’Écrin – orchestrated by one of the world’s greatest pastry chefs. After having worked for Fauchon, Pierre Hermé and Ladurée, Christophe Michalak is now the Pastry Chef of the famous…