Peel the potatoes and cut them into smaller pieces.
Put them in a pot and pour water in until it covers the potatoes. Do not add salt to the water!
Boil the potatoes until they are completely tender. This takes about 20 minutes.
Drain the water from the potatoes and add butter in small pieces.
Mash the potatoes with your preferred tool - for example, a hand mixer - and add milk or the boiling water from the potatoes until the mash has a suitable consistency.
Season the mash with salt, pepper, and optionally grated nutmeg.
