Place the potatoes in a large saucepan and cover with water. Bring to a boil over medium heat and boil for about 20 minutes, until quite tender. Drain and mash well.
Return the potatoes to the large saucepan over very low heat and stir in the butter. Add 2/3 cup milk or more, as needed. Add salt, to taste, and stir in the garlic.
Calories per serving: 193