Hafragrautur (Icelandic oatmeal porridge)

Instructions

1. Bring the water and half of the milk to a boil in a saucepan.
2. Pour in the oats in a steady stream, stirring with a wooden spoon.
3. Lower the heat and cook for 5 minutes, stirring regularly, until thick.
4. Gradually add the rest of the milk, still stirring, to reach the consistency you like.
5. Stir in the salt, sugar and butter until melted.
6. Serve hot in bowls, with a splash of cold milk and a pinch of cinnamon.