Beat the Parfait in a planetary mixer until light and airy and add the pulp from the vanilla pod.
Transfer the mixture to a piping bag and pipe into silicone hemispherical moulds.
Make a well in the centre of each hemisphere and divide the filling between these wells.
Freeze and stick the two frozen hemispheres together.
Melt the white chocolate.
Working with gloves, dip your hands in the white chocolate.
Roll the parfait balls between your hands.
The chocolate will adhere to the frozen parfait.
Store in the freezer until needed.