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The Dry Brine (The Golden Rule): 24 hours before cooking, rub the entire roast generously with kosher salt. Place it uncovered on a wire rack set inside a baking sheet in the fridge. This dries out the surface skin for a better crust and seasons the meat all the way to the bone.
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The Chill Removal: Take the roast out of the fridge 2 hours before cooking. You want it to come close to room temperature so it bakes evenly.
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The Herb Paste: In a small bowl, mash the softened butter, garlic, rosemary, thyme, salt, and pepper into a paste. Pat the roast dry, brush a thin layer of Dijon mustard over it, and slather the herb butter over the entire roast.
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The Low Roast: Preheat your oven to 225°F. Place the roast bone-side down in a roasting pan. Insert a digital meat thermometer into the thickest part of the meat (away from the bone).
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The Waiting Game: Roast until the internal temperature hits your target pull temperature. For a perfect Medium-Rare, pull it out at 120°F. This will take roughly 35 to 40 minutes per pound.
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The Rest (Part 1): Remove the roast from the oven, tent it loosely with foil, and let it rest for 30 minutes. Do not skip this. The temperature will rise to about 130°F as the juices redistribute.
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The Blast (The Sear): While the meat rests, crank your oven as high as it goes—500°F. Pop the rested roast back in for 6–10 minutes just until a sizzling, deep-brown crust forms.
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Slice and Serve: Because you already rested the meat before the sear, you can carve it into thick slices immediately!
3 Target Temperatures to Know
Always cook by temperature, never by time! Pull the meat 10°F below your final desired temperature before the sear:
| Desired Doneness | Pull Temp (Before Sear) | Final Temp (After Rest/Sear) | Center Color |
| Rare | 110°F | 120°F–125°F | Bright Red |
| Medium-Rare (Ideal) | 120°F | 130°F–135°F | Deep Pink |
| Medium | 130°F | 140°F–145°F | Light Pink |
3 Tips for “Blue Ribbon” Perfection
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Buy Bone-In: The bones act as a natural heat shield, keeping that section of the meat incredibly juicy and flavorful. Ask the butcher to cradle-cut it (cut the bones away and tie them back on) for easy carving.
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The Thermometer is Non-Negotiable: You cannot wing a prime rib. A leave-in digital probe thermometer is the only way to guarantee you don’t overcook it.
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Save the Pan Drippings: Pour the juices from the roasting pan into a saucepan with a splash of beef broth and red wine for an easy Au Jus.
