For the tiramisu with a difference, mix pudding powder in a few tablespoons of cold milk and sweetener, bring remaining milk to a boil and boil in dissolved pudding powder.
Soak gelatin sheets, squeeze and dissolve in hot pudding.
Mix curd cheese and yogurt, add to pudding and season well.
Soak biscuits in coffee-rum mixture and place in mold.
Alternate layers of custard and biscotti, ending with custard.
Refrigerate for at least 3 hours and serve sprinkled with cocoa powder.