Herb-Crusted Prime Rib with Horseradish Cream
A whole rib roast salted two days ahead and reverse-seared, so the crust arrives in the last ten minutes instead of the first three hours.
- Serves
- 8
- Prep
- 20 min (plus 2-day dry brine)
- Cook
- 3 hr
- Written
Method
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Two days ahead, salt the roast heavily on all sides and set it uncovered on a rack in the fridge, so the surface dries out enough to brown properly.
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An hour before cooking, pull the roast out to lose its chill.
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Mash the garlic, rosemary, thyme, and olive oil into a paste and pack it over every surface, then crack the pepper on top so it beads into the paste instead of falling off.
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Roast bone-side down at 250°F until an instant-read thermometer reads 115°F at the center, about 3 hours for a 4-bone roast.
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Pull the roast and rest it loosely tented for 20 minutes — the center will climb another 5 to 10 degrees on its own.
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Raise the oven to 500°F and whisk the sour cream, horseradish, lemon juice, and a pinch of salt while it heats.
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Slide the roast back in for 8 to 10 minutes, until the crust has gone deep brown and crackling.
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Carve against the grain into thick slices and serve with the horseradish cream.
Notes
The two-day salt does the same job here as it does on a smoked brisket or a whole roasted duck: it draws moisture to the surface and lets it dry off, so the outside has something to brown instead of steaming under a wet crust. Cooking low first and hot at the very end — instead of the usual sear-then-roast — is what keeps the whole roast an even pink edge to edge, with the crust confined to where you actually want it.
A meat thermometer isn’t optional here; a roast this size will keep climbing well past 115°F if you pull it late; catch it at 115°F for the final rise to land you at a true medium-rare. Leftover slices, if there are any, are better cold on a sandwich the next day than reheated.