Orange milkshake

Orange milkshake
250 ml orange juice
1.5 oranges -> orange zest, or 1 sachet of natural orange zest flavouring
4 scoops vanilla ice cream
4 tbsp. icing sugar
375 ml milk
8 tsp. grated chocolate
(Minimum blender capacity: 1 l)
Place all of the ingredients, except the for the chocolate, into the blender and mix well. To serve, fill glasses with the drink and sprinkle with the grated chocolate.