PREPARATION
We make the espresso coffee and wait till it cools down.
First beat the eggs thoroughly with the isostevia and the mascarpone cheese, at a low speed until the ingredients form a cream. Dip the savoyard biscuits in the espresso for as long as you like. Let them cool very well.
Spread the biscuits on a pyrex and on top pour the cream. Then, sprinkle with cocoa.