Preheat the oven to 150˚C/300˚F. Heat the coconut milk and orange juice in a saucepan until hot but not boiling.
In a bowl, whisk together the eggs, extra yolks, sugar, vanilla and spices. Slowly add the hot coconut milk, stirring well to combine. Pour into a shallow cake tin (or several tins) and sprinkle with a little extra cinnamon.
Bake in the oven for about 30-40 minutes, until the custard is set. It may still wobble a little in the middle. Sprinkle with grated coconut before serving.