Combine the carrots and water in the Instant Pot insert. Seal the lid, set the pressure vent on SEALING and select MANUAL, HIGH PRESSURE for 2 minutes.
When the time is complete, QUICK RELEASE the pressure, and pour the carrots into a strainer to drain. Wipe out the insert, return it to the Instant Pot and select SAUTE. Add the butter and stir while it melts. Add the mint and sauté for about 30 seconds to release the flavor and aroma of the mint.
Add the carrots back into the insert, sauté to coat, remove, sprinkle lightly with sea salt and serve immediately.
The time for the Instant Pot to come to pressure may vary. An estimate has been included in the total time for the recipe.