1. Scrub potatoes and peel if desired. Cut into 1/2" chunks, place into a 4 quart saucepan and cover with cold water by one inch. Cover, set over high heat and bring to a boil.
2. Once boiling remove lid and decrease heat to maintain a simmer. Cook until the potatoes are soft*. Approximately 15 - 20 minutes. Drain potatoes, do not rinse, return to the still warm pan.
4. Transfer potatoes to the bowl of your stand mixer** and add the milk. Using the wire whisk attachment, start on a low setting and mix to mash the potatoes. As they smooth out, increase the speed to medium and whip until smooth.
5. Add salt and pepper, adjusting for taste. If your potatoes aren't creamy enough, add more milk a little at a time to smooth them out. Keep warm until ready to serve.