Separate the egg whites from the egg yolks, and place in two different bowls
Add 2 tablespoons of granulated sugar into the egg yolks and whisk until it is thick in consistenct and pale in color
Fold the mascarpone cheese into the egg yolk mix. Then whisk until the egg yolks and mascarpone are well incorporated. Place in the fridge
In a separate bowl, whip the whipping cream until you get stiff peaks. Make sure the whipping cream is cold
Next, whisk your egg whites while pouring the remaining 2 tablespoons of sugar slowly into the egg white. Whisk continuously until you get stiff peaks
Bring the mascarpone out of the fridge, and fold it into the egg yolk mixture gently.
Next, fold the egg whites into the mascarpone/egg yolk mix. I typically fold in half of the egg whites first, before folding in the second half.
Be careful not to mix out all the air your whisked into the mascarpone and eggs