Peel and wash the vegetables and potatoes and cut them into fine cubes. Rinse pork fillet. Boil up about 150 ml water and broth. Add vegetables and potatoes, place meat on top. Cover and simmer at low heat for 15-18 minutes
Wash the herbs and chop, except for something to garnish. Drain the meat and vegetables, collecting the vegetable water. Keep meat and vegetables warm
Heat the fat, add the flour and fry until golden brown. Stir in vegetable water and milk, bring to the boil and simmer for about 5 minutes. Add vegetables and half of the herbs. Season to taste with salt and pepper
Turn the pork fillet in the remaining chopped herbs, then cut open. Serve with vegetables and sauce. Garnish with remaining herbs