Rice
The simplest way
I don’t eat rice often enough to have a rice cooker, so when I do, here’s the easy method I use.
I don’t bother washing the rice, but you can if you want it to be less sticky. After about 15 minutes, I take the lid off to test and stir/fluff a bit with a fork to let it dry out. The biggest problem with this method is it’s fairly easy to burn the bottom, so check often.
When scaling, the ratio of water to rice is usually said to be 2:1, but I usually add a little less water than that.