Rinse quinoa under cold running water until the water runs clear.
Spray the Instant Pot liner with cooking oil and add the rinsed quinoa (still damp), water and salt.
Lock the lid and set the steam valve to its “sealing” position.
Select the “MANUAL” button and cook for 1 minute on high pressure. It will take about 5 minutes for the pressure to build, then the countdown timer will start.
Allow the pressure to release naturally for 10 minutes and then release any remaining pressure.
Fluff quinoa with a fork and serve.
Leftover quinoa keeps well, refrigerated, for 4 to 5 days. Make sure it has cooled to room temperature before covering and chilling. You can also portion the quinoa into freezer bags and freeze the quinoa until you’re ready for it.