My lovely Tiramissu

7 Egg Yolks
1 cup Sugar
3 cups Mascarpone Cheese (or 1  750-gram container mascarpone)
4 1/2 tablespoons Water
1 1/2 tablespoons Powdered Gelatin
3 Egg Whites
1/4 cup Sugar (for egg whites)
1 cup Heavy Cream, whipped
2 1/2 cups cooled Espresso
1/2 cup Kalhua
20 to 24 Ladyfingers
1 cup Chocolate shavings

In a mixer with the whip attachment, whip egg yolks and 1 cup sugar until thick and pale in color (ribbon stage). Add mascarpone and whip until well incorporated.
Pour water into a small bowl then pour powdered gelatin over it. Do not stir. Allow gelatin to absorb all of the water (about 15 minutes) then place the bowl on top of a small saucepan containing simmering water (creating a double boiler). Immediately turn off the heat and allow the gelatin to dissolve completely.
In a separate bowl, whip egg whites to a soft peak, gradually add 1/4 cup sugar, then slowly pour in dissolved gelatin. Whip to a stiff, glossy peak. Fold whites into mascarpone and yolk mixture then fold in whipped cream.

In a separate bowl, combine espresso and kalhua. Soak 1 ladyfinger at a time in the espresso mixture. In an 8 by 10-inch pan, arrange soaked ladyfingers close together in neat rows until the bottom of the pan is completely covered. Pour 1/2 of the mousse over the ladyfingers and smooth with a rubber spatula. Sprinkle 1/2 of the chocolate shavings over mousse. Create another layer and chill until set.