Put water oil and salt in a large saucepan and bring to a boil.
Turn the heat on medium and gradually pour the cornmeal, constantly mixing with a whisk.
Turn the heat on low and continue whisking for about 5 minutes.
Pour into bowls (this should be good for 2-3 portions), add as much sour cream and grated cheese as you like and mix. I added about 3 tablespoons sour cream and half a cup grated cheese.
Enjoy your quick breakfast recipe with polenta, sour cream and cheese!