Put milk, orange and lemon peels and the cinnamon stick into a saucepan and bring it to boil. Remove the pan from the heat and set aside for 10-15 minutes.
Put the egg yolks, sugar and cornstarch in to a bowl and mix them well until the mixture turns into pale yellow.
Filter and pour the warm milk into the yolk bowl and stir them well.
Pour the mixture back to the pan and heat the mixture until it has thickened. (Keep stirring during this heating process)
Pour the mixture into the ramekins. Cover the ramekins by cling film and leave them to the fridge to set for over 4 hours or overnight.
When serving, sprinkle a thin layer of sugar on the top and then use the kitchen blowtorch or oven grill to caramelise the sugar on the top. Enjoy!!
