Clean, peel, and quarter the potatoes.

Place the potatoes in a large pot and cover completely with cold water.

Bring to a boil, then reduce to a simmer and cook for 10–15 minutes, or until fork tender.

Drain the potatoes and return them to the pot.

Add the butter, milk, salt, and pepper.

Use an electric mixer to whip until light and fluffy, or mash by hand to your preferred consistency.

Serve warm.