Clean and wash the cauliflower and divide it into florets. Cook in 3/4 litres of boiling salted water for about 15 minutes. Meanwhile hard-boil the eggs in about 10 minutes. Drain the cauliflower. Collect the liquid.
Heat the fat and sweat the flour in it. Add cream and cauliflower water while stirring constantly and bring to the boil. Season with salt, pepper, some curry and mustard. Add peas and cook for 5 minutes in the sauce.
Peel and cut the eggs into six. Wash the cress and cut off briefly. Add cauliflower florets, eggs and cress to the sauce and serve hot.