Wash and peel the potatoes. Cut into pieces and cook in boiling salted water for about 20 minutes. Clean and wash the cauliflower. Cook in boiling salted water for about 15 minutes. Drain the potatoes and let them evaporate briefly.
Add 200 ml of milk and butter and mash everything to puree. Season to taste with salt and nutmeg. Pour into a greased casserole dish and smooth down. Remove the cauliflower with a skimmer, drain well and place on the puree.
Heat the oil in a large frying pan. Brown the ground pork in it until coarsely crumbly. Dust with flour and sauté briefly. Add 200 ml milk and 200 ml water while stirring. Bring to the boil, stir in broth and simmer for 5 minutes.
Wash the parsley, dab dry and chop, put something aside for garnishing. Season the sauce with salt and pepper, stir in the parsley. Pour the sauce over the cauliflower. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 15 minutes.
Sprinkle with parsley set aside.