Authentic Grandma's Tiramisu

Method

1. 1
   Mix the pasteurised egg yolks with the sugar or erythritol until smooth.
2. 2
   Add the mascarpone cheese to the egg yolk and sugar mixture, and whisk until well incorporated.
3. 3
   Prepare the espresso coffee and let it cool slightly.
4. 4
   Dip the sponge fingers into the coffee and arrange them on the bottom of a dish.
5. 5
   Cover the sponge fingers with a layer of the mascarpone mixture.
6. 6
   Repeat the layers of sponge fingers and mascarpone until all the ingredients have been used.
7. 7
   Dust the final layer of mascarpone with unsweetened cocoa powder.
8. 8
   Chill the tiramisu for at least 4 hours before serving.