After 2 hours, pour the rice and water into a pot together with the dried shrimps and scallops. Add in some salt, stir and set the broth to a boil at medium heat for about an hour. Next, turn it to low heat, cover the pot and let it simmer. I would stir every 15 minutes and check for its consistency. Add more water if you like watery porridge. In the last 5 minutes, I would add in clams.