Your customers have had a wonderful dinner. They are loving the world, they are singing praises of your restaurant to their waiter and sending back compliments to the chef—they’re even posting on Facebook about the great meal they just ate. Now, they’re ready to order dessert, and their good mood makes them want a great sweet wine with their dessert. They read the pairings that you’ve set up on your digital wine menu (hint, hint), and they order the most decadent dessert menu item you have: the Chocolate Cake with Buttercream. They’re really indulging, so they also order the champagne, which your menu has recommended as a great celebration pairing with that fabulous cake. They love the cake, and their champagne catches the light as they toast your restaurant. They love champagne. Then, they take a sip and disaster happens. Do you know what went wrong?