A combination of dark and milk chocolates yields a particularly luscious fondue. Vary the recipe by using amaretto, Kahlúa, or another after-dinner liqueur instead of cherry-flavored Kirsch.
Whisk together milk and cocoa powder in large saucepan or stove-top fondue pot, and bring to a simmer over medium heat. Add dark and milk chocolates, and heat 3 minutes, or until chocolate has melted. Stir in Kirsch, and transfer to fondue pot, if necessary. Serve with Dippers.