There are two ways to release the pressure from your instant pot. Natural release and quick release. Natural release means that you'll let the instant pot depressurize on its own without any help from you. With a quick release, you can immediately depressurize your instant pot by using the pressure valve or by manually turning the venting knob. The main difference between quick and natural release is how much steam/hot water is released during each method. With the natural release, the instant pot has time to absorb some of that steam/water and replenish some of its liquid contents.