In a small bowl mix the coffee and Kahlua and set aside.
Beat the egg whites until stiff and set aside.
In another bowl beat the egg yolks and vanilla until pale and lemon-colored. Add the mascarpone until smooth. Fold the egg whites into the cheese mixture gently.
In 4 small glass dessert bowls, place 3 ladyfingers in bottom and generously sprinkle the Kahlua coffee mixture.
Drop 1/4-cup dollops of cheese mixture on top of ladyfingers, repeat with the lady fingers again followed with the Kahlua-coffee mixture. Top with cheese mixture.
Refrigerate for at least 3 hours or overnight. Before serving top with fresh whipped cream and dust with cocoa, or sprinkle chocolate shavings on top.
*RAW EGG WARNING
Food Network Kitchens suggest caution in consuming raw and lightly-cooked eggs due to the slight risk of Salmonella or other food-borne illness. To reduce this risk, we recommend you use only fresh, properly-refrigerated, clean, grade A or AA eggs with intact shells, and avoid contact between the yolks or whites and the shell.
The recipes for this program, which were provided by contributors and guests who may not be professional chefs, have not been tested in the Food Network's kitchens. Therefore, the Food Network cannot attest to the accuracy of any of the recipes.
Consumption of raw or undercooked eggs, shellfish and meat may increase the risk of foodborne illness.