The white yam in these photos that we took in a Taiwan market has intrigued us no end. The tubers are so straight and without any damage. They look so fresh and inviting to cook. We have been wondering that if it is grown in the ground, the tubers would not be so straight and unblemished. Could it be that they were grown in plastic tubes? No one could tell us for sure. No one in the market could tell us where in Taiwan is it grown. And we could not get the exact botanic name. Of course, we were also wondering if this variety could be grown in the Philippines. Perhaps some of our readers can tell us more about this white yam. Is there any one out there that could enlighten us?
Now, Dimples has helped us through her 2 comments. She says the botanic name of the white yam in Japan is Dioscorea japonica while the white yam in Taiwan is Dioscorea polystachya. They call Dioscorea japonica Nagaimo in Japan.
Now, how do they produce those unblemished roots (tubers)? The tubers are so straight and cylindrical. Someone out there might be able to help us.