1. Heat ½ cup cream in saucepan over medium heat, until just about to boil.
2. Finely chop the chocolate and place in bowl.
3. Pour hot cream over chocolate, stir once, cover, and set aside.
4. Whip remaining cream and sugar in the other bowl until they form soft peaks.
5. Stir the chocolate mixture until all is melted and well incorporated, then fold in the cream.
6. Chill for at least 2 hours.