Yamaimo Green Onion Pancakes

The yam used to make these pancakes is known either as yamaimo (mountain tuber) or nagaimo (long tuber). In the Chinese market I frequent, it is labeled nagaimo (yes, a Japanese name), and at the Japanese market, the very same tuber is labeled yamaimo. Have I confused you yet? It is certainly confusing to me. That said, yams traveling under either label will work here. They fry up golden, yet moist and a tad gooey at the center. This is a treasured texture for th