Hard boil the eggs in boiling water for about 10 minutes. Then rinse with cold water. In the meantime peel and finely dice the onions. Clean and wash the radishes and cut them into small slices. Wash the chives and cut into small rolls.
Heat the fat and fry the onions until golden brown. Add flour and sweat. Add stock and cream while stirring constantly, bring to the boil. Peel and cut the eggs into six. Warm the eggs, radishes and chives in the sauce.
Season to taste with salt and coloured pepper. Cut the cress short and sprinkle over it.