1 cup of rice, 2 of water, gently steam for 10 mins, fluff up and leave covered for another 5 mins.
This.
Double the quantity of (cold) water to unwashed rice, add a pinch of salt, bring up to boiling point and then simmer gently (don't stir it) until the water is absorbed (will be c 10 mins) and then leave to stand with the lid on for about 5 mins.
I'm pretty sure this is Ken Hom's recommended way of cooking rice and there's a chap who knows how to cook rice. It has never failed me anyway.