遅刻御無礼！(笑)

お米は炊きたてじゃないほうがいいみたいです。
炊くときは油を小さじ一杯くらい入れるといいみたい。

Forgive my tardiness! :-)
He uploaded about 10 minutes later than usual.

It seems it's better if the rice is not freshly cooked. It also seems you should put in about a teaspoon of oil when cooking it.