Dry-aged rump of beef with porcini, watercress and bearnaise
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Ingredients
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- 1 x 2.5 kg dry-aged rump of beef
- 4 T Worcestershire sauce
- 4 T extra virgin olive oil, plus extra for drizzling
- Sea salt and freshly ground black pepper
- 1 kg porcini mushrooms
- 100 g watercress For the Béarnaise
- 1½ cups verjuice
- 1 T dried tarragon
- ¼ cup tarragon vinegar
- 1 T green peppercorns
- ½ onion, finely chopped
- 3 egg yolks
- 500 g butter, melted
- 10 g fresh tarragon or parsley, roughly chopped
- Sea salt and freshly ground black pepper, to taste
Method
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Marinate the rump in the Worcestershire sauce and olive oil for at least 30 minutes. Season liberally with salt and pepper then cook on a rotisserie or over indirect coals on a kettle braai for 45 minutes, or until cooked medium rare.
Remove from the heat and allow to rest in a warm place for 15 minutes.
Cut the porcinis in half, drizzle with olive oil and season. Place over a hot grill and cook for 5 minutes.
Dress the watercress with a little olive oil and seasoning.
To serve, slice the beef and arrange on a platter. Spoon over the mushroom then pour over some of the Bearnaise (serve the remaining Bearnaise separately). Serve the dressed watercress in a large bowl on the side.
To make the Béarnaise: Reduce the verjuice, dried tarragon, tarragon vinegar, green peppercorns and onion, until approximately 3 T of liquid remains. Combine the reduction and egg yolks in a stainless-steel or glass bowl, over a double boiler. Whisk until thick.
Remove from the heat and slowly whisk in the melted butter. If the mixture is too thick, add a couple of tablespoons of hot water. Add the chopped herbs and season.
Cook’s tip: To check whether or not your meat is done, insert a skewer into the thickest part of the rump and leave it there for 30 seconds. Touch the withdrawn skewer to your bottom lip – for rare to medium rare, the skewer should be just warm. The hotter the skewer, the more cooked the meat.
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