Step 1

Pour 1 cup of water into a 6-quart Instant Pot. Add potatoes and salt.

Step 2

Secure lid and turn valve to seal.

Step 3

Cook on "Pressure Cook" (or "Manual") high pressure for 10 minutes. When the timer goes off, turn valve to vent, to quick release pressure. When depressurized, carefully remove cover.

Step 4

Drain potatoes, using a colander in the sink. Return potatoes to Instant Pot.

Step 5

Add milk, butter, and pepper to potatoes. Mash thoroughly with a potato masher. Add more milk as needed to achieve desired consistency.