If you do not like the half-boiled state, use rice slightly cooled by being kept warm in a rice cooker for some time after the rice has been steamed, or leave the rice as served in a rice bowl with a pit formed in it until it is cooled to a certain degree.
これを嫌う人は、炊き上がった後炊飯器でしばらく保温され粗熱の取れた飯を使うか、飯を茶碗によそって窪みを作ってからある程度冷めるまで時間を置いたものを使うとよい。