
Wash the rice in cold water until the water runs clear.
Place the washed rice in a rice cooker or large pot with 1½ cup of water to let the rice soak for 30 minutes.
Wash and cut the sweet potato into small cubes. *3
Soak the cut sweet potato cubes in a bowl with plenty of water. *4
Pour in the cooking sake and salt in to the rice cooker/pot and stir.
Drain the soaking water of the sweet potato cubes and add the cubed sweet potato on top of the rice in the rice cooker/pot.
If using a rice cooker, simply close the lid and start the rice cooker cycle. *5
Once the rice is cooked, keep the lid on and let it steam for an additional 10 minutes.
After steaming, gently fluff the rice with a rice paddle, mixing the sweet potato cubes throughout.
Serve hot into a rice bowl and sprinkle gomashio (black sesame seeds salt) over the rice.