Add the potatoes to your largest pot and cover with 2 inches of cold water. Bring to a boil over high heat, then lower to a simmer and cook until the potatoes are fork tender, about 20-30 minutes.
As potatoes cook, add the milk, butter, and salt to a small saucepan and set over very low heat.
Once potatoes are cooked, drain and return them to the pot. Using a potato masher or ricer, mash the potatoes. Once mashed to your liking, slowly stir in the milk mixture until smooth and creamy. Serve. Enjoy.