Editor’s Note: Monthly Ticket is a CNN Travel series that spotlights some of the most fascinating topics in the travel world. Auerspergstrasse 5, 5700 Zell am See, Austria; +43 6542 7720 Festive feast: Mayer’s Restaurant is a classy fine-dining joint run by renowned Bavarian chef Andreas Mayer in Prielau Castle on the northern bank of the lake. Nives 11, 39048 …