Chocolate Mousse

Directions

1. 1
   Beat the yolks with the espresso, sugar, and vanilla until a mousse-like foam is achieved, 10 to 15 minutes.
2. 2
   Stir in the melted chocolate.
3. 3
   Set aside while preparing the meringue.
4. 4
   In a clean bowl, whip the egg whites to a thick foam (you can do this with a whisk or in a mixing machine) and add the sugar gradually while still beating.
5. 5
   Continue to whip after all the sugar is added until you have a soft, glossy meringue, about 5 minutes.
6. 6
   Fold the meringue into the chocolate mixture in two or three additions, just until it is evenly blended.
7. 7
   (The meringue will deflate a little as you work, but adding it in parts helps keep it as light as possible.)
8. 8
   Fold in the 3/4 cup of whipped cream.
9. 9
   Immediately spoon or pipe the mousse mixture into molds (stemmed glasses such as brandy snifters or wine glasses, custard cups, or souffle dishes are all good options).
10. 10
    Chill the mousse at least 3 hours before serving.
11. 11
    Spoon or pipe a dollop or rosette of the whipped cream on top of each mousse.