The smooth and chewy texture, achieved through a long-cooking process, ensures that the yam doesn't fall apart. It originates from Wenxian County, Jiaozuo, Henan Province—the core origin of iron yam and one of the four famous hometowns of Huai medicine. Located north of the Taihang Mountains and south of the Yellow River, the ancient loess soil is rich in minerals and trace elements. Only authentic loess iron yam is grown here, without any ordinary yam, guaranteeing its powdery aroma and nutrition from the source.