From Clinton Kelly's book 'Freakin' Fabulous on a Budget'
Add cornstarch to the Kirschwasser, or to a little white wine, and set aside. Heat wine in a medium saucepan over medium heat. Whisk in cornstarch mixture and simmer for 5 to 6 minutes. Fold in the cheese and nutmeg; stir until melted. If mixture is too thick, add more wine.
Transfer to a warm fondue pot.