Peel, wash and halve the potatoes. Cover and cook in salted water for about 20 minutes. Boil eggs hard. Roast mustard seeds without fat briefly
Sauté the flour in 2 tbsp. hot fat until light yellow. Stir in 1/4 l water, 1/4 l milk, cream and stock. Bring to the boil and simmer for about 5 minutes. Stir in mustard and season the sauce. Quench the eggs, peel them, possibly halve them and put them into the sauce
Drain the potatoes. Heat 1/4 l milk, pour into the potatoes. Mash everything finely. Stir in 1 tablespoon of fat. Season to taste with salt, pepper and nutmeg. Arrange everything. Sprinkle with the mustard seeds. Goes well with raw carrots or green salad
Drink: mineral water