Line a ring cake mould (approx. 600 ml capacity; 14 cm Ø) with cling film. Separate the eggs. Mix the egg yolks and 75 g sugar with the whisk of the hand mixer until creamy. Carefully stir in cream cheese.
Stir in lime zest and juice.
Separately beat egg whites and cream until stiff. Carefully fold the cream first, then the beaten egg white into the cream cheese mixture with a whisk.
Put the biscuits in the freezer bag and crumble coarsely. Layer the ice cream mixture and biscuit crumbs alternately in the mould. Place in the freezer for at least 3 hours (preferably overnight).
Defrost the raspberries. Puree finely, pass through a sieve. Stir in 50 g sugar and vanillin sugar. Serve the ring cake with raspberry puree.