How to make
Blend the biscuits in a blender or crumble them finely. Pour the melted butter on top, a vanilla (optional) and mash with your hands. Press the resulting mixture along the bottom of a form with your hands.
Beat the sour cream, cream cheese, yoghurt and sugar with a mixer. Melt the swollen gelatin, cool it a little and mix it with the cream. Beat everything with blueberry jam.
Distribute the cream on top of the layer in the form, even it out and put it for several hours in the fridge.
