Completely melt the chocolate in a double boiler. Add the cream to a medium bowl and pour in the chocolate. Whisk the mixture very slowly creating a shiny, elastic emulsion.
Whisk in the butter, then add the liqueur, to taste, until well combined.
Pour the mixture into a fondue pot. Dip your choice of bites into the fondue using fondue forks and enjoy!
This recipe was provided by professional chefs and has been scaled down from a bulk recipe provided by a restaurant. The Food Network Kitchens chefs have not tested this recipe, in the proportions indicated, and therefore, we cannot make any representation as to the results.