Add chocolate and water to a small pot on low heat and stir until chocolate melts and is completely smooth.
Stir in sugar and salt over low heat. Continue to heat and stir for about 4 minutes or until it is pretty thick then remove from heat and allow to cool.
Fold the chocolate into whipped cream and set in the refrigerator. When ready to serve, add two heaping tablespoons of chocolate cream mixture to a mug then fill with hot milk.
Notes
Store the leftover French hot chocolate in an airtight container in the refrigerator for up to 5 days. To reheat, use a microwave or a saucepan on low heat.