Wash the duck breast and pat dry. Sauté in hot oil for about 5 minutes on each side. Season with salt and pepper. Peel and finely chop the onion and add it to the cooking fat. Fry meat at medium heat for another 20 minutes. In the meantime, clean and wash the broccoli and divide into small florets.
Cook in boiling salted water for about 10 minutes. Then drain. Melt the fat just before serving. Roast the flaked almonds in it until golden brown. Toss the broccoli florets in it. Deglaze duck breast with red wine and stock. Add rosemary. Let it boil down over high heat for 2 minutes. Take the meat aside. Stir starch and a little water until smooth and thicken the sauce. Bring to the boil briefly. Season with salt, pepper and cranberries.
Add rosemary. Let it boil down over high heat for 2 minutes. Take the meat aside. Stir starch and a little water until smooth and thicken the sauce. Bring to the boil briefly. Season with salt, pepper and cranberries. Garnish with fresh rosemary. Serve with potato croquettes