How to Make It
In a large bowl, add the rice and cover with at least two inches of cold water. Moving your hand in a circular motion, gently stir the rice until the water is very cloudy. Then strain the rice through a fine mesh sieve and repeat the process until the water is no longer cloudy when stirring, 4 or 5 more times.
In a rice cooker or pot with a lid, combine the rice, 2 cups water, and the kombu (if using). Cook the rice according to the package instructions.
Transfer about 1 cup of the steamed rice to a serving bowl, top with the egg, soy sauce, and sesame seeds.
To eat, stir vigorously with chopsticks.