Ingredients

4 1/2 cups confectioners sugar 

1/2 cup good-quality unsweetened cocoa powder 

1/4 teaspoon salt 

12 ounces cream cheese (1 1/2 packages), room temperature 

1 1/2 sticks (12 tablespoons) unsalted butter, softened 

18 ounces bittersweet chocolate (preferably 70 percent cacao), melted and cooled 

1 1/2 cups creme fraiche (12 ounces) 

Preparation

Sift sugar, cocoa, and salt together into a bowl; set aside. Put cream cheese and butter in the bowl of an electric mixer fitted with the paddle attachment. Mix on medium speed until smooth.

Reduce speed to low; gradually mix in sugar mixture. Pour in melted chocolate in a slow, steady stream. Gradually mix in creme fraiche.