Add sesame oil and salt to your bowl of cooked rice. Place a piece of plastic wrap over a small bowl and fill with rice. Remove plastic from bowl and twist into a ball.
Gather all edges of the plastic wrap together and twist and form into a ball again. Repeat this process four more times. Optional: roll rice balls in dish filled with black sesame seeds.
Pan fry the rice balls on medium heat for at least 5 minutes on each side. This will help you get that crispy, outer texture. Try to avoid flipping over back and forth so that rice balls stay intact.