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Aged Beef Rump Cap with Stuffed Roscoff Onion

Aged beef rump cap with stuffed Roscoff onion

PT2H

PT4H

1
Begin by preparing the onion purée. Peel and slice the onions, then add to a pan with the butter and thyme and cook slowly on a very low heat until caramelised - this should take about 4 hours. Add the double cream to the pan with the caramelised onions and bring to the boil, then remove from the heat and transfer to a blender, discarding the thyme. Add the milk and salt to the blender and blitz until smooth. Pass the purée through a fine sieve and refrigerate until required
  • 5 white onions
  • 190g of butter
  • 1 sprig of thyme
  • 150ml of milk
  • 2g of maldon salt
  • 125ml of double cream
2
Wrap the roscoff onions in foil, season with salt and olive oil and bake at 190°C/gas mark 5 for 15 minutes. Remove from the oven and leave to cool, then peel the skin and slice off the top of the baked onions. Scoop out the soft flesh from the inside leaving the two outer layers and set to one side
  • 4 Roscoff onions, medium
  • salt
  • olive oil
3
To make the filling for the stuffed onions sweat the shallots in butter until tender. Add the girolles, flash fry on a high heat then deglaze with the sherry. Add the cream to the pan and stir well, simmering until the liquid has reduced by half. Add the chopped herbs to the sauce, then spoon the mixture into the hollowed out onions. Sprinkle over the Parmesan followed by the breadcrumbs and place under a hot grill until golden brown
  • 2 shallots, medium and fine diced
  • 200g of girolles, small, preferably Scottish
  • 50ml of dry sherry
  • 50ml of double cream
  • 1 tbsp of parsley, chopped
  • 1 tbsp of chives, finely chopped
  • 1 tsp tarragon, finely chopped
  • 60g of Parmesan, finely grated
  • 60g of Panko breadcrumbs
  • 20g of butter
4
Preheat the oven to 180°C/gas mark 4 and remove the rump cap from the fridge
  • 1.5kg beef rump cap
5
Once the beef rump has reached room temperature season liberally with salt and pepper, then sear the beef on all sides in a very hot pan. Remove the rump from the pan and place in the oven, cooking for approximately 15 minutes or until it reaches a core temperature of 37°C
6
While the beef is cooking prepare the onion rings for the garnish. Preheat a deep-fryer to 150°C and using a sharp knife - or mandoline if you have one - finely slice the onion into rings 1.5mm thick. Combine the egg white and salt together in a bowl and dip the onion slices into the mixture before coating them in the flour. Fry until crisp and leave to drain on kitchen paper until required
  • 1 onion
  • 400g of egg white
  • 20g of maldon salt
  • 150g of self-raising flour
7
Remove the beef from the oven and allow to rest in a warm place for a further 15 minutes. Meanwhile, gently warm the onion purée in a saucepan ready to serve
8
Place a spoonful of the warm onion purée onto each plate followed by the stuffed onion. Slice the beef rump against the grain into generous portions and place a large slice on each place. Garnish with the crispy onion rings and land cress
  • land cress

Ingredients

Metric

Imperial

  • Rump cap

    • 1.5kg beef rump cap
  • Stuffed onion

  • Onion purée

  • Onion rings

  • To serve

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