Pour the water into the Instant Pot. Add the trivet and place the frozen fish directly on the trivet. Season with salt, pepper and any other seasoning you’d like.
Place the lid on and move the valve to sealing. Press manual pressure and set the timer to 2 minutes high pressure. You’ll notice the Instant Pot will start to come to pressure first and then the timer will begin. It can take 8-10 minutes to come to pressure.
When the cook time is up, carefully do a quick release; then open and remove the lid. Check the internal temperature of the fish to make sure it’s 140°F or higher. If it’s not, seal again and cook for an additional 30 seconds.
Carefully remove the trivet from the pot and discard any cooking liquid and grease. Use the cooked fish as desired in a recipe.
Notes
Storage: Cooked fish will keep well in the fridge, covered, for 3 days.