Put the oatmeal, milk and water in a very tall bowl and stir. Place in the microwave for 2:30 minutes at 800 watts. Then add the salt and stir. Then add the vanilla sugar and, if necessary, cinnamon. Then place in the microwave for another 3:30 minutes. Let it sit for about a minute and enjoy.
Always add salt before using the microwave for the second time, because then the oatmeal is easier to reduce.