Transfer rice to a large bowl and fill with cold water. Soak for 1 hour then drain and rinse thoroughly.
Transfer the rice to a large pot. Fill with 12 cups of cooking liquid (water, chicken broth, veggie broth, beef broth, or some combination of each). Stir and bring to a boil over high heat. Once boiling, reduce heat to low and cover. Simmer gently, stirring every 10-20 minutes to prevent the rice from sticking to the bottom of your pot.
After approximately 60-90 minutes, uncover and allow the congee to cook for an additional 15 minutes or so. Season with salt, to taste, and decide if the consistency is to your liking. Add additional liquid to thin, or continue to cook, uncovered, until desired consistency is reached.
Serve congee in bowls garnished with fresh green onions, fresh ginger, sesame oil, and soy sauce, if desired.