Mix the vanillin sugar and cream setting agent. Whip the cream until stiff and allow the vanillin sugar to trickle in. Fold the yoghurt into the cream and fill into a piping bag with star-shaped spout. Pour one tuff of yoghurt cream into each apricot half. Arrange the strawberry sauce on four plates, arrange three filled apricot halves on each plate and serve decorated with mint leaves as desired