Wash the meat, dab dry and cut away the layer of fat. Rub the meat with salt and pepper and place in the fat pan of the oven. Heat clarified butter and pour over the meat. Roast in the preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: level 4) for 20-25 minutes. Squeeze oranges, measure 125 ml juice.
Clean and wash spring onions and radishes. Put some radish green aside. Cut spring onions into rings. Leave the radishes whole or cut in half, depending on size. Remove the roast beef and let it rest for 5 minutes. Heat the oil in a pan and fry the spring onions. Deglaze with orange juice, bring to the boil, stir in broth. Add the radishes and season to taste with salt and pepper, remove from heat. Wash parsley, dab dry and chop finely. Sprinkle vegetables with it.
Heat the oil in a pan and fry the spring onions. Deglaze with orange juice, bring to the boil, stir in broth. Add the radishes and season to taste with salt and pepper, remove from heat. Wash parsley, dab dry and chop finely. Sprinkle vegetables with it. Cut the roast beef into slices and serve with the vegetables. Garnish with the radish greenery