NOTE: If you are not familiar with using the Instant Pot, or have never done a quick release, here's what you should do: This recipe cooks for 15 minutes, you do a quick release, and then the additional 15 minutes you let the Instant Pot release pressure automatically. So, after the first 15 minutes, when the Instant Pot beeps and goes to OFF, get an oven mitt, and gently turn the pressure valve from SEALING, to VENTING. Pressure, or steam will be released from the Pot, and this make take a couple of minutes for all the pressure to be released. When all the pressure is released, check the float valve, to make sure it is all the way down before removing the lid to the Instant Pot. If you're not familiar with where this is, check your instruction manual that came with your Instant Pot for exact locations. When the float valve has dropped down, you can safely open the lid to the Instant Pot. After you stir the corn pudding, and replace the lid, just leave the Instant Pot to cook and release the pressure automatically. Check the float valve to make sure it's down, and remove the lid. Happy Cooking!