In a small bowl, whisk together the tamari, sake, honey, and miso paste until well combined.
Place the glaze in a small pot and heat over medium/low to reduce and cook out some of the alcohol in the sake.
Dampen your hands with water. Take 1/4 cup of the rice and roll it into a ball. Repeat until all the rice is rolled into balls.
Preheat your Foreman grill to high with the top closed.
Flatten each rice ball into a disc while the grill is heating up.
Brush both sides of the rice cakes generously with vegetable oil. Place them on the grill and close the top.
Cook for 3 to 4 minutes until golden and crispy.
Alternatively, grill with the top open for 3 minutes, flip, and grill the other side for another 3 to 4 minutes. Repeat until all the cakes are cooked.
Remove the cakes to a platter and immediately brush with the warm glaze. Then, sprinkle with the sesame seeds and chives.
Serve immediately as a snack or pair with thinly sliced grilled pork or runny fried eggs as a main dish.