Stirring continually, add the stock to the rice a ladle at a time. Allow the liquid to absorb before adding the next ladleful. Stop adding stock once the rice is cooked (about 20 minutes). The risotto should be smooth, creamy, and just slightly runny. Add the cream cheese and stir until blended. The risotto will thicken. If it gets too clodgy, add a splash of stock. Add salt and cracked white pepper to taste.