Then break up the grains gently around 5 to 10 minutes later. (Note 3) and enjoy.
Note 1: 12 minutes for cast iron pot and 15 minutes for regular pot.
Note 2: you can observe this via a transparent cover or watch the water vapor. The vapor should be quite faint and you can smell the rice aroma.
Note 3: you should break up the grains gently when it is still hot. This can help to remove remaining water and avoid then rice sticky to the bottom after chilled.