To cook sweet potato porridge, put it in cold water. According to relevant public information, sweet potato porridge is an ancient traditional Chinese dish that is cooked in a pot with cold water. The preparation process of sweet potato porridge is simple. Wash the sweet potatoes and cut them into small pieces, put them into the pot, and add Add an appropriate amount of cold water and cook over medium heat until the sweet potatoes become soft. Add the rice and continue to cook until the porridge becomes thick.