Name: Keller’s Bittersweet Chocolate Mousse
Yield: 8
Ingredients: 9 oz bittersweet chocolate, finely chopped; 4-1/2 tbsp unsalted butter, cut into small cubes; 2 tbsp strongly-brewed espresso (or other flavoring, see above); 1 tsp vanilla extract; 6 large eggs, separated, at room temperature; 2 tbsp sugar; 2 cups heavy cream, chilled; Bittersweet chocolate shavings, for garnish (see Kitchen Skill above); White chocolate shavings, for garnish, optional; Additional lightly sweetened whipped cream, for garnish optional