Wash and clean the strawberries. Puree half the strawberries. Set the rest of the strawberries aside. Whip a cup of cream until half stiff. Stir in yoghurt, sugar and vanilla sugar.
Add strawberry puree to the mixture and mix in. Pour strawberry yoghurt ice cream into the running, prepared ice cream machine and beat for 20-40 minutes until firm and creamy (or put strawberry yoghurt ice cream in a bowl and place in a freezer).
From time to time stir the mixture with a whisk until it is firm. In the meantime, melt the chocolate in a bain-marie, dip four strawberries halfway into the chocolate and allow the chocolate to set.
Set aside more strawberries for garnishing. Cut remaining strawberries into small pieces. Whip remaining cream until stiff for garnishing. Place the strawberry yoghurt ice cream in a bowl and carefully fold in the strawberry pieces.
Form balls with an ice-cream scoop and arrange them in glasses. Decorate with cream, advocaat, chocolate strawberries and strawberries.