Bring water to a boil with salt in a 4-quart heavy pot.
Slowly add polenta, whisking while pouring.
Cook over medium heat while whisking for 2 minutes.
Reduce heat to low.
Cover and simmer polenta, stir for 1 minute after every 10 minutes of cooking.
Cook for a total of 45 minutes or until there is no ‘gritty’ texture, when it is ‘creamy soft, very thick, and fairly firm, not runny.
Remove from heat and serve hot.