Chocolate - Orange Mousse Frosting - cooking recipe

Ingredients

1 cup sugar
3 1/2 tablespoons cornstarch
2 ounces unsweetened chocolate, chopped fine
1 cup boiling water
1 tablespoon Grand Marnier or 1 tablespoon orange liqueur
2 tablespoons butter, cut into pieces and softened
bowl of ice and cold water

Preparation

In a heavy saucepan, whisk together the sugar, cornstarch and chocolate. Whisk in the boiling water.
Bring the mixture to a boil over moderate heat, whisking constantly. Simmer, whisking, for 2 minutes. Whisk in the liqueur.
Transfer the mixture to a metal bowl. With an electric mixer, beat in the butter until incorporated.
Set the bowl of frosting into a larger bowl filled with ice and cold water; beat the frosting until it is light and holds soft peaks.