The fruity dessert consists of clementines and pomegranate - very healthy, but a desert is a treat and we all need a little bit of naughtiness! Hence the brandy snaps. The addition of pistachios to the brandy snap mixture adds texture and flavour.
I had a disaster with my first batch, leaving them to cool for 5 mins as instructed by the recipe, they became too cool to shape. Learning by my mistakes the second batch fared better.