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Steak Béarnaise Butter And Au Gratin Mash

Steak Béarnaise Butter And Au Gratin Mash

24h Steak with Béarnaise Butter
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24 hour steak, Béarnaise Butter and Au Gratin Mash


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  • Author: Brian Lambæk Hansen
  • Total Time: 26 hours 20 minutes
  • Yield: 4 1x

Ingredients

Scale
  • 2.5 pounds (1.2kg) Ribeye roast
  • Salt
  • Pepper
  • A little oil

Bearnaise butter

  • 1/3 pound (150g) of butter
  • 34 stalks chopped tarragon (or to taste) – only the leaves
  • 23 tbsp. white vinegar (I use apple cider vinegar)

Au gratin mash

  • 1 1/3 pound (600g) of potatoes
  • 2 tbsp. (30g) butter
  • 23 cloves garlic
  • 1/5 cup (0.5 dl) of cream
  • 1/3 pound (150gr) of freshly grated Parmesan
  • A pinch of grated nutmeg

Other

  • 4 ramekins

Instructions

24 Hour Steak

  1. Brown the roast on a hot pan for a couple of minutes, while constantly turning the roast
  2. Transfer the roast to a roasting pan and place in a 125°F (50°C) hot oven for approx. 24 hours (use a meat thermometer to check oven temperature)
  3. Let the roast rest for 1-2 hours
  4. Cut off ends and slice it into appropriately sized steaks
  5. Flash fry your steaks in a scorching hot pan for 30 sec on each side

Béarnaise butter

  1. Let the butter soften
  2. Stir tarragon and vinegar into the butter
  3. Put the mass on a piece of cling film and roll it into a sausage
  4. Place in freezer for a few hours and then in the fridge

Au gratin potatoes

  1. Cut the potatoes into rough pieces and cook them until tender in unsalted water
  2. Drain and add cream and crushed garlic.
  3. Let it boil a little, then blend with a stick blender
  4. Add the butter and 100 grams of parmesan and nutmeg and blend
  5. Season with salt, pepper, nutmeg and lemon
  6. Adjust. consistency with cream or butter
  7. Put in ramekins and sprinkle the rest of the parmesan on top
  8. Bake in oven for approx. 15 min at 430°F (225°C)

Serving

  1. Serve with a salad of leaves tossed in an oil/vinegar dressing
  • Prep Time: 20 mins
  • Cook Time: 26 hours

 
Looking for the perfect mushroom sauce for steaks? Check this lovely recipe out.

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