Step #1 Rinse a loaf tin with cold water, drain & place this in freezer until required & turn freezer to coldest setting.
Step #2 place 2 of the eggs in a mixing bowl, stiff in half the icing sugar & half the vanilla essence or vanilla sugar then whisk the mixture for about 5 mins with a hand-held electric mixer until pale & creamy.
Step #3 Whip half the cream with 1 tbsp of the remaining icing sugar until stiff.
Step #4 fold the cream into egg mixture lightly but thoroughly & spread into loaf tin.
Step #5 cover & freeze for 2 hrs.
Step #6 break chocolates into squares & place this in a microwave safe dish & let it melt.
Step #7 whisk milk with molten chocolate & stir well till its a smooth mix.
Step #8 In a bowl, whisk remaining eggs with 3 tbsps of remaining icing sugarand remaining vanilla essence or vanilla sugar until pale & creamy mix.
Step #9 stir in the chocolate mixture.
Step #10 whip remaining cream with rest of icing sugar till stiff.
Step #11 fold it to the chocolate mixture lightly but thoroughly then spread on partailly frozen ice cream in tin.
Step #12 using a fork in a spiral action,whirl both mixtures together, smooth surface.
Step #13 cover & freeze.
Step #14 after 6-7 hrs turn freezer to its normal setting.