Warm-up the water and make the coffee with 15g of Nescaf� coffee and 30g of sugar. Crack and beat the eggs with 80g of the sugar, then add the mascarpone cheese and mix in.
In another bowl pour the whipping cream with 30g of sugar and beat until whipped. Add the whipped cream to the eggs and mascarpone and mix until a soft-cream compound is formed.
In an 8-inch casserole dish pour a little coffee over the bottom. Start making a first vertical layer of lady fingers biscuits and pour 3 spoons of coffee over each biscuit.
Use a spatula to cover and spread cream from step 2 evenly over the layer. Sprinkle some cocoa powder. Make the second and final layer horizontally by repeating the same procedure as the first.
Sprinkle more cocoa powder over the top and rest it for at least 4 hours in the fridge.