2Whisk egg whites until stiff peaks form, gradually adding half of the sugar.
3In a separate bowl, whisk the egg yolks with the remaining sugar until light and creamy.
4Mix the egg yolks with mascarpone until smooth.
5Gently fold the egg whites into the mascarpone mixture, stirring from bottom to top to maintain the airy texture.
6Dip the ladyfingers into the coffee and layer them in a dish. Cover with a layer of mascarpone cream and repeat the process until all ingredients are used.
7Finish with a dusting of unsweetened cocoa powder.