Potato is rich in proteins, starch, fruit glue, cellulose, amino acids, vitamins and minerals. Selenium and iron in the potato are essential elements of human resistance to fatigue, anti-age and blood-rehabilitation, especially since selenium is known as the “Creating King” and is easily absorbed into the body and can remain in the serum, repair the heart muscles and enhance the body's immunity. Cake is made of potatoes, rich in dried fruit, then made in a steamed way, not only to avoid heavy sugar from traditional cakes, but also to avoid a soft and fresh taste。