Peel and wash the potatoes, possibly cut in half and cook for about 20 minutes in boiling salted water. Meanwhile clean the broccoli and divide into florets. Cook in 400 ml salted water for 5-8 minutes. Wash the fillet, dab dry and tie in shape with kitchen string. Put 1 sprig of rosemary under each yarn.
Fry in hot oil on each side for about 3 minutes. Season with salt and pepper. Keep warm. Deglaze the roast stock with broccoli water. Stir in creme légère. Bring to the boil and season with salt and pepper. Wash parsley and shake dry. Pluck the leaves from the stems, except for a few for garnishing, and chop finely. Add parsley to the potatoes and toss.
Stir in creme légère. Bring to the boil and season with salt and pepper. Wash parsley and shake dry. Pluck the leaves from the stems, except for a few for garnishing, and chop finely. Add parsley to the potatoes and toss. Arrange everything together and serve garnished with the rest of the parsley