Roast Rib of Beef with Port

Alex Mackay serves his roast beef with a rich, fruity sauce and celeriac puree
By Alex Mackay
Roast Rib of Beef with Port
  • Rating:
  • Serves: 4-6
  • Cook Time: 2 hours 5 minutes plus resting time
  • Prep Time: 20 minutes
  • Effort: medium


  • 1 two bone rib of beef, approximately 2.25kg
  • 3 red onions, peeled and halved
  • 1 large orange, zest only, to serve

For the port sauce

  • 500 ml port
  • 200 ml orange juice
  • 3 tbsp soy sauce
  • 800 ml beef stock, reduced by half
  • 80 g dried cranberries
  • 4 sprigs rosemary, leaves picked and chopped
  • 50 g unsalted butter

For the celeriac puree

  • 1 large celeriac, peeled and roughly chopped
  • 100 ml whipping cream


1. Take the beef out of the fridge a couple of hours before cooking it.

2. Preheat oven to 240C.

3. Rub the beef all over with plenty of salt and pepper then put it on top of the halved red onions in a roasting tray. Roast in the oven for 20 minutes then turn down the heat to 190C and roast for a further hour and 15 minutes for medium rare.

4. Once cooked, transfer both beef and onions to a rack over a large dish. Loosely cover with tin foil and put back in the oven with temperature off and the door left slightly ajar. Leave to rest for at least 30 minutes.

5. To make the sauce: in a large pan, reduce the port, by three quarters and add the orange juice and soy. Reduce by half and add the beef stock. Bring to the boil, turn off the heat and set aside.

6. While the beef in resting, drain the fat from its roasting tin and use the port sauce to deglaze the pan. Heat the roasting tin, allowing the sauce to boil for a couple of minutes until thick enough to coat the back of a spoon. Transfer to a saucepan, add the dried cranberries and rosemary, stir in the butter, season and set aside.

7. To make the celeriac puree: boil the celeriac in plenty of salted water for about 15 minutes until soft. Strain in a colander and press with the back of a spoon to extract as much of the water as possible.

8. Put the celeriac back into the pan and pour over the whipping cream. Break it up with a potato masher, turn the heat back on and bring to the boil. Spoon into a food processor and blend for 4-5 minutes until totally smooth. Season and set aside.

9. To serve: cut the whole piece of beef from the ribs by running a knife between the bones and meat. Carve into thick slices and serve with the port sauce, the celeriac puree and the onions from the roasting tray. Scatter over the orange zest.

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