Wash the potatoes and cook covered for about 20 minutes. Grate cheese. Melt 2 tablespoons of fat in a pot. Briefly sweat flour in it. Stir in 3/8 l water, milk and stock. Bring to the boil and simmer for about 5 minutes. Melt half of the cheese while stirring. Season to taste with pepper, nutmeg, salt if necessary
Quench the potatoes, peel them. Pour into a greased casserole dish. Pour sauce over it, sprinkle the rest of the cheese over it. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/gas: level 3) for 15-20 minutes. Wash the chives, cut into small rolls and sprinkle over the top. Serve with a green salad
Drink: mineral water