After tasting a pistachio brûlée in a restaurant, Adrian liked the idea but wanted to experiment with the flavours, so he tried adding the floral note of the lavender.
Lightly toast the pistachios and pound all but 10g of them to a paste using a pestle and mortar.
Mix half the sugar and all the cream with the pistachio paste and lavender in a saucepan and bring to a simmer. Set aside for at least 2 hours to allow the flavours to infuse.