Place cream and 1 1/2 cups sugar into standing mixer and whip to stiff peaks. Place bowl in refrigerator and let chill. Beat egg yolks and the mascarpone cheese with 1/2 tablespoon sugar until very thick, about 3 minutes. Place in refrigerator and let chill. Whip the egg whites, cream of tartar and remaining 1/2 tablespoon sugar to stiff peaks. Chill in refrigerator. In a large bowl combine espresso coffee, frangelica and amaretto. Dip ladyfingers, 1 at a time into coffee-liquor mixture and line bottom of baking pan with 1 layer ladyfingers. Top with alternating layers of egg-yolk mascarpone mixture, whipped cream mixture and whipped egg whites. Sprinkle with cocoa powder through a sifter. Repeat layering, starting with soaked ladyfingers. Sprinkle the top with cocoa powder until dark brown. Place in refrigerator for 10 to 12 hours.
Consumption of raw or undercooked eggs, shellfish and meat may increase the risk of foodborne illness.