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 a chef, restaurant or culinary professional. It has not been tested for home use.