Rinse quinoa to remove the natural saponins that give it a bitter taste. (Some quinoa is already rinsed, which should be indicated on the package.)
Use a large or wide saucepan so the quinoa will have plenty of room to cook evenly. If you have one, choose a heavy saucepan to prevent burning. Add water and salt, and bring to a full (rolling) boil. Add the quinoa and stir.
Allow the water to come to a full boil again, then turn to low. Cover and simmer for 15 minutes. (Set the timer and resist the urge to lift the lid.) Turn heat down if it starts to boil over.
Remove from heat, keep covered and let stand for 10 minutes.