Our large supply of white yam, white yam unprepossessing appearance, drab skin, thin cylindrical in shape, white flesh and firm, slightly acidic taste when chewing sticky. However, "non-drug profiling", according to historical records, eat yam "Cong ears eyesight", "no hunger and sickness" function, very beneficial to human health, but also spread yam civil capacity for physical conditioning, weakness after illness constitution, postpartum women nursed back to health, child physical fitness has a significant effect, which is called "food medicine." More white yam: http://www.ylbsy.com/ more comprehensive