Although white rice can provide nutrients and calories needed by human body, the content of nutrients in brown rice, especially crude fiber, is much higher than that in white rice, which is helpful for gastrointestinal peristalsis and can alleviate digestive system diseases such as stomach pain and constipation. In addition, brown rice can also reduce cholesterol and triglycerides and prevent cardiovascular and cerebrovascular diseases and cancer. Therefore, the elderly may wish to add some brown rice when steaming white rice. However, the processing of brown rice takes time, so it is recommended to soak it in cold water overnight before cooking. When steaming rice, it is best to mix two portions of white rice and one portion of brown rice.