2 tablespoons orange-flavored liqueur (recommended: Grand Marnier)
For serving: pound cake, doughnuts, long-stemmed strawberries, bananas or pretzels
Chop the chocolate and place it in a heat-proof bowl set over a pan of simmering water. Add the cream, zest, coffee, and liqueur and stir constantly until the chocolate is melted and smooth. Transfer the mixture to a fondue pot and serve warm with pound cake, doughnuts, strawberries, bananas or pretzels.