01 -
Peel potatoes and rinse in cold water. Cut potatoes in half if very large. For smoothest texture, remove small knots with a spoon or potato peeler tip. Place in a large pot (5 Qt+), cover with cold water, and bring to a boil. Cook partially covered until easily pierced with a knife, about 20-25 minutes. Do not overcook.
02 -
Drain potatoes thoroughly and transfer to stand mixer bowl. Lightly mash by hand to break them up before attaching the whisk.
03 -
Begin mixing on low speed for 30 seconds, then increase to medium. Slowly drizzle in hot milk to achieve desired consistency. With mixer running, add softened butter 1 tablespoon at a time, waiting a few seconds between additions. Potatoes will become whipped and fluffy. Finally, incorporate sea salt to taste.