White mouth white yam "is a high-quality the Baishan medicines species. This variety is extremely rich in nutritional value, laboratory analysis, the hectogram contains carbohydrates 19.9 - 21.5 g, protein 1.9 - 2.25 g, iron, zinc, copper, manganese content is also high, in addition to the rich containing the the human adrenal required mesothelin, mucilage, choline, starch, sugar protein, free amino acids, can be described as extremely rich in nutrients, ended pitchfork hormone, vitamin C, amylase, diosgenin white yam rich white mouth mucus containing juice, choline, protein, polyphenol oxidase, vitamin C, mannose polysaccharide, phytic acid, 16 kinds of amino acids, allantoin and 3,4 - dihydroxy-phenylethylamine, etc. These are important nourishing ingredients, Spleen and stomach, so that the white yam is not only important nourishing foods and herbs, so since ancient times, "yam yam mountain, drug" argument, Vegetables beneficial to health.