Mix the milk with the water and put on the stove to come to a boil.
Add the cornmeal in a thin trickle while stirring nonstop with a wooden spoon. Stir until the mixture thickens.
Add salt to taste. Crumble the feta cheese in a baking container, add the oil and pour in the thickened cornmeal mixture. Sprinkle with feta cheese.
Bake about 15 min. in a hot oven. Sprinkle with paprika. Cut it into pieces, once the kachamak cools.