Cover inside of a 2-litre serving bowl with plastic wrap (2.2 Liter insulated Thermomix Serving Bowl is perfect) and place in freezer to chill (this will aid in the freezing and curing of the ice-cream, later)
Insert butterfly whisk into mixing bowl, add eggs and sugar and whisk 10 minutes at speed 4
Remove butterfly whisk and add mascarpone and mix for30 seconds at speed 3 (use spatula to move ingredients from bottom of bowl around blade and mix for another 30 seconds from speed 3-4 until ingredients are creamy and smooth throughout
Add Lady Fingers and mix for 15 seconds on reverse speed 2 with spatula inserted through hole in lid of bowl to ensure ingredients stay near the blade
Pour half of the cream mixture into the prepared and chilled 2-litre container
Distribute half the "set-aside swirl mixture" over the cream and mix gently with a spoon to create a variegated effect
Pour remaining cream into the bowl and drizzle remaining swirl in a decorative fashion over the cream and gently swirl it to create a variegated effect
Seal the container with a lid and wrap tightly for freezer, then freeze for at least 10-12 hours (no peeking)
Remove the pan from the freezer 15-20 minutes before serving to enable easier scooping