By Joseph Khoudair Pistachio… this humble and ancient morsel for me has always been synonymous with Middle Eastern cuisine, by virtue of its myriad of uses. It is nestled between two supporting flavours and is the core of my Lemon and Pistachio Almond cake, which remains one of my favourites. Lemon and Pistachio Almond Cake   Serves 8-12 Ingredients 3/4 cup castor sugar 2 tablespoons lemon zest 3 eggs (room temperature) 2/3 cup light olive oil 1/2 cup full-fat greek yoghurt 1/4 cup…