This product is the rhizome of Rehmannia glutinosa or Huaiqing Rehmannia glutinosa of the Scrophulariaceae family, which is processed and steamed.There are raw rehmannia and cooked rehmannia (processed by steaming and drying with rice wine). Raw rehmannia is more inclined to cool blood, while cooked rehmannia is more inclined to nourish blood and yin. Shengdi is generally used as an ingredient for soups, such as raw and cooked rehmannia black bean pork ribs soup, which clears heat and detoxifies, strengthens the spleen and eliminates dampness.