Rinse the oats and rice thoroughly.
Mix rice and oats in a 2:1 ratio and place them in a pot.
Add water (1.2~1.5 times the amount of ingredients).
Soak for about 30 minutes, then cover and cook over medium heat.
When it starts boiling, reduce to low heat and cook for another 10~15 minutes.
Turn off the heat and let it steam for 10 minutes.
Stir the rice evenly to finish.