In Instant Pot, add 1 cup cold water. Place potatoes into a steamer basket inside the Instant Pot. If you don't have a basket, add trivet and place potatoes on top.
Close the lid, turn pressure valve to Sealing and cook on High Pressure or Manual for 5 minutes.
Release pressure immediately using Quick Release by turning valve to Venting and open the lid. Test potatoes for doneness by poking with the knife. If the knife pierces flesh without much resistance, they are ready.
Remove the basket or drain potatoes and season to your liking. I like to add butter, salt, pepper and fresh dill or parsley or serve as is with a saucy main. Serve with a main dish of choice.
Notes
Store: You can refrigerate cooked potatoes in an airtight container for up to 3-4 days.