Nerikuri (Sweet Potato Glutinous Rice Cake)
Pounding the rice completely smooth before adding any sweet potato gives the finished cake mochi's stretch, with the soft, moist body of the potato folded through it. There is twice as much potato as rice by weight, which turns the slab yellow. A layer of kinako underneath and more on top make the very sticky dough possible to press, cut, and pick up. The batch yields 40 pieces.