Insert water, salt, and oil into the bowl and bring to a boil for 12 minutes at 100 degrees, speed 1. Add the flour through the lid opening with the blades in motion at speed 3 and cook for 40 minutes at 100 degrees, speed 1. Keep the spatula inserted and when the polenta thickens, reduce the temperature to 90 and the speed to 1. Occasionally scrape down the sides. Tips: if you want a softer polenta, reduce the flour. If you want to decrease cooking times, you can use quick-cooking flour.