Pour 2 cups of white distilled vinegar directly into the pot. Put the pot into the Instant Pot. Place the lid on, make sure the vent is turned to sealing, then press the Steam button and set it to 2 minutes.
It will take about 5 minutes to come up to pressure, then it will steam for 2 minutes. After the cycle finishes, let the pressure naturally release for about 5 minutes. Once that time is up, carefully turn the vent to venting to release any remaining pressure.
Remove the lid and carefully pour out the hot vinegar—the pot will be very hot. Rinse the inner pot thoroughly with warm water and dry it completely.
Remove the silicone sealing ring from the lid and let it air dry completely.
However, if the sealing ring is still holding on to odor after the steam cycle, it’s time for a longer deodorizing soak.
To help remove stubborn odors from the silicone sealing ring, place the ring in a shallow dish (like a casserole dish) and add a couple squirts of mild dish soap, 1/4 cup baking soda, and 1 cup vinegar.
Carefully pour in boiling water until the ring is covered by a couple inches of water. Let it soak for a couple of hours.
After soaking, rinse the ring very well with fresh water and let it air dry completely before putting it back on the lid.
Don’t forget the exterior of the Instant Pot! Spray the outside of the Instant Pot with a degreaser (like this homemade one), then wipe it down with a clean, damp cloth. Finish by drying everything thoroughly with a clean, dry cloth.