1/2 cup heavy cream
3 1/2 ounces dark chocolate, finely chopped (preferably 70 percent cacao)
1/2 ounce (1 tablespoon) unsalted butter, softened
Bring cream to a boil in a saucepan over medium-high heat. Pour cream over chocolate in a heatproof bowl. Let stand for 2 minutes. Add butter, then whisk mixture until smooth. Let cool, stirring often. Use immediately.
1c heavy whipping cream
2 T sugar
In a mixing bowl using the whisk attachment combine the whipping cream and sugar. Whip until soft peaks forms.