Cut walnut tip in half lengthwise. Spread the lower half of the walnut tip with melted nougat, place blueberries on top and drizzle with a little nougat.
Place the upper half of the walnut tip on top and press together lightly – pull through the beaten egg and coat in grated walnuts (walnut crumbs).
Bake slowly in clarified butter – drain well.Mix melted nougat with lukewarm orange juice to a smooth consistency and spread on plates. Sprinkle with diced aranzini. Cut the walnut spike into thicker slices and lightly sprinkle with sugar, if desired. Place the slices on the plates. Garnish with orange zest and mint.