Boil the coffee with 4 spoons of coffee for 2 cups. Then chill. Beat the egg whites into snow. Beat the icing sugar, egg yolks and a dash of amaretto with the mixer on the highest setting until frothy. Add the mascarpone and stir again. Fold in the egg whites.
Place a layer of ladyfingers on the bottom of a bowl and dip the biscuits one at a time in the cold coffee. Spread half of the mascarpone cream on top. Place the second layer of ladyfingers on top and distribute the rest of the mixture on top. Place in the refrigerator for at least 2 hours.
Just before serving, spread the cocoa over the dessert using a small sieve.