Take a measure - glass, cup, bucket, whatever.
Add two measures water to saucepan, bring water to the boil. Add salt if required. Add one measure rice to the boiling water. Cover. Set your electric hotplate hob to simmer. Simmer for 12 minutes. After 12 minutes, turn off the heat. Leave on hob for a further 12 minutes.
Produces rice the way I like it. I usually rinse the rice beforehand, as I bulk buy decent unwashed basmati. The rinsing also allows me to pick out any stones.
Obviously, if it takes more than 6 minutes to boil the water, it will take more than 30 minutes.
This method appears to require the residual heat left after turning off a traditional resistive element electric hob, so might need adjusting for a gas or induction hob, for example.
I can do a decent stir fry while the rice is cooking, or a semi-decent curry (my ideal curries take several hours to cook, or even a couple of days).
Cheers,
Sid