If you’re using an electric pressure cooker like an Instant Pot, simply press the Manual or Pressure Cook button and program it cook for 5 minutes under high pressure. Lock the lid, with the valve in the sealing position and let the Instant Pot do it's thing.
When the potatoes are done cooking, turn off the Instant Pot and let the pressure release naturally (~10 minutes). Instant Pot users can manually release the pressure manually at the 10 minute mark if the pressure hasn’t completely dropped by then. You can fry the cooked potatoes right away or refrigerate them in a covered container for up to a week.
Melt the ghee or butter over medium high heat in a large skillet. Once it starts sputtering, carefully add the potatoes to the pan.
Season generously with salt and pepper. Leave the potatoes undisturbed for 1 minute before flipping to brown the other side for an additional minute.
Squeeze on the juice from half a lemon and toss with fresh Italian parsley.