Peel, wash and dry the potatoes. Chop them into 2-3 mm-thick rounds (we recommend using a mandolin). After chopping, do not wash again for the starch gratin in the potato to be applied successfully.
Put milk, cream, 1 clove of garlic cut in half, salt, pepper, and grated nutmeg in a large pan and cook over medium heat. When it starts to boil, turn the heat down, add the potatoes, and cook for 2 minutes, shaking the pan in the meantime.
In the meantime, rub the gratin dishes that will go into the oven well with the cut garlic cloves and grease them with butter. After portioning the potatoes into the pots, pour the remaining cream over them.
Bake in a preheated oven at 150 degrees for 1 hour until golden brown. Check with the tip of a knife to see if it is cooked; it should be almost melted. Serve hot.