Roast Beef with Horseradish Sauce

Instructions

• 1Season the beef all over with the salt.
  Tip: Beef can be cooked straight away or seasoned and refrigerated overnight. 
• 2Insert the wire rack into position 8. Set the oven to Roast, No Fan, 245°F, for 2 hours 30 minutes and press Start to preheat. Meanwhile, continue to the next step.
• 3Place the broiling rack in the roasting pan and place the beef in the center of the rack with the bones facing towards a short end of the pan.
• 4Once preheated, place the pan in the oven with the bones facing the right side and roast for 2 hours 30 minutes. Meanwhile, continue to the next step.
• 5To make the horseradish sauce, combine the creme fraiche, horseradish, mustard, vinegar, salt, pepper and chives in a bowl. Cover and refrigerate until required.
  Tip: Sauce can be made up to 2 days ahead, store, covered, in the refrigerator.
• 6Beef is ready when inserted with a meat thermometer, away from the bone reaches 113°F. If not, roast it a little longer.
  Tip: Total cook time will vary depending on the shape, weight and size of your roast. For best results, test for doneness 5 to 10 minutes before the end of the cook.
• 7Remove the beef from the oven, tent with foil and allow to rest for 45 minutes.
• 8When there is 5 minutes remaining for the resting time, adjust the oven. Select Phase Cook for P1 and set the oven to Roast, Super Convection, 375°F, for 5 minutes. Press Confirm for P2 and set the oven to Broil, High, for 4 minutes and press Start to preheat. Uncover the beef, pour out any resting juices and turn so that the bones now face a long end of the pan.
• 9Once preheated, brush the beef with the oil. Return to the oven with the bones facing the door and roast in P1 for 5 minutes. The oven will automatically switch to P2.
• 10Beef is ready when inserted with a meat thermometer, away from the bone reaches 130°F for medium-rare. If not, roast it a little longer.
• 11Remove the twine. Cut the beef into thick slices and arrange on a serving board. Sprinkle the horseradish sauce with chives and serve.