Recipe: Koji-Brined Standing Beef Rib Roast (Prime Rib)
Print RecipeIngredients
¼ cup koji rice
2 tablespoons kosher salt
One standing rib beef roast (prime rib), 4 ribs, about 8 pounds
Tools
Resources
The Field Method for Cast Iron Care
Instructions
If time and refrigerator space allows, it’s best to season your roast at least 1 day ahead of time. In a spice grinder or blender, grind the koji rice into a fine powder. Transfer to a bowl and stir in the salt. Use this mixture to generously season the roast all over, then place in a wire rack set inside a rimmed baking sheet. Refrigerate, uncovered, at least 1 day and up to 5 days.
Preheat the oven to 225°F and position a rack in the center. If you weren’t able to season your meat ahead of time, do so now by generously seasoning it all over with kosher salt. Place the rib roast, bone side down, in a No.10 Field Skillet.
Transfer to the oven and roast, rotating the skillet 180° every hour or so, until an instant-read thermometer inserted into the center of the meat registers 125°F (for rare, or 130°F for medium-rare), 4 to 5 hours. Remove the skillet from the oven and tent the roast with foil; let rest at room temperature for at least 30 minutes and up to 2 hours. Pour off any accumulated juices and use for making gravy or au jus.
About 30 minutes before you’re ready to serve the roast, preheat the oven to 500°F. Uncover the roast and return the skillet to the oven; roast until well browned all over, 10 to 15 minutes.
Transfer the roast to a cutting board and cut away the ribs, following the contours of the bones. Slice the roast and serve right away.
Seasoning Rating: Better
Better. All that fat that renders out of the beef as it slowly roasts will add a good amount of seasoning to your skillet.
Seasoning Ratings:
Best—These dishes are the best options for building resilient seasoning, and surefire choices for getting tricky pans back on track.
Better—The best way to keep your skillet in great shape is to cook frequently, and cast iron-friendly dishes like these are your bread and butter.
Safe—These recipes won't strip seasoning away from your pan, but won't really add any, either.
OK—Be sure to clean up promptly. Recipes with this rating might feature acidic ingredients which can affect seasoning if not washed soon after cooking.
