If cooking with husks on: trim silk and stem, leaving husks in place.If cooking with husks off, remove silk, husk, and trim the stem.No prep is needed for frozen corn on the cob.
Place (optional) trivet in the cooker. Arrange CORN EARS in the cooker without exceeding the "max fill" line.
Pour WATER into the cooker. Use 1 cup minimum for 6-quart cookers and 2 cups minimum for larger cookers.
Close and lock pressure cooker lid. Turn the pressure release valve to "Sealing" position.
Pressure cook 2 minutes HIGH pressure for corn without husks and 4 minutes HIGH pressure for corn with husks or frozen corn.
Let the pot sit undisturbed for a 10-minute natural pressure release. Carefully turn pressure release valve to the "Venting" position to release any remaining steam.
Open the lid and transfer corn to a serving platter. Serve warm with desired toppings.
Notes
shucked or with husks - Corn on the cob can be pressure cooked with husks or without. Either way, do not handle hot corn with bare hands.
trivet is optional - A trivet is not required, but it does elevate the corn above the water line in the Instant Pot which helps the whole corn evenly steam instead of boiling any portion of it.
How many ears? - Pressure cook corn on the cob with as few as 1 corn ear, or as many will fit without exceeding the "max fill" line.
natural pressure release - Do not skip this step because the corn is still cooking to tender perfection.
default "Keep warm" setting - The pressure cooker defaults to "keep warm" when the cook cycle is complete. To deactivate, press "Cancel".