1. Heat in a saucepan the milk. 2. Add the cinnamon stick and grate nutmeg. 3. Banana blend in a good blender or mash with a fork. When the milk is thoroughly warmed up, to introduce banana puree, stirring constantly. 4. Remove the banana milk from the heat for a second before boiling. Remove the cinnamon stick. Pour into glasses and sprinkle the top with a pinch of cocoa or chocolate crumbs.