This is a recipe for slow-roasted prime rib as written by Michael Chu and as featured on the Cooking for Engineers web page. A sear is used to give the roast an appetizing outer crust. A long, slow roasting period at 200 degrees Fahrenheit is then utilized to cook the meat to an even level of done-ness from the center to the outer edge.
Adapted from cookingforengineers.com
Hmmm, now you need a standing rib roast (also known as prime rib even if the beef isn't prime quality). The term "standing" means that because the bones are included in the roast, the roast can stand by itself. A rib roast with the bones removed is commonly referred to as a rolled rib roast. My preference is for the standing variety because the bones provide additional flavoring to the roast. A rib roast comprises of seven ribs starting from the shoulder (chuck) down the back to the loin. Each rib feeds about two people, so if you have a party of eight, buy and cook a four rib roast. The rib roast closest to the loin is more tender than the rib roast nearest the chuck. This end is referred to as the small end rib roast or loin rib roast or sirloin tip roast. The chuck end of the rib roast is bigger and tougher and is sometimes referred to as a half standing rib roast or large end rib roast. Depending on preference, you can dry age the roast for a few days to bring out additional flavor and produce a more buttery texture in the muscle (aging allows the natural enzymes to break down some of protein in the meat). Age the beef up to a week in the refrigerator by leaving it uncovered on a wire rack over a large pan to catch any drippings for at least a day and no more than seven days. When you are ready to cook the beef, trim off any dried pieces after the aging. It is common for a roast to lose about 10% to 15% of its weight during a week of aging. Take the rib roast out of the refrigerator and let it sit on the counter for a couple hours to raise the roast temperature to near room temperature. To help cook the roast evenly, we'll need to tie the roast. Using kitchen twine, tie the roast parallel to the rib bones at least at each end. I usually tie between each pair of ribs. Heat the roasting pan or a separate pan on the stove until hot with a little oil. Place the roast on the pan and sear for three minutes on each side. Remove from heat and season heavily with salt and pepper. Place on the grill of your roasting pan or on a wire rack. Now stick the probe of your thermometer into the roast so that the probe is approximately in the middle of the roast (and not touching a bone). Position the pan on an oven rack in the lowest position of your preheated 200°F oven. Yes, 200°F. The low heat will evenly cook the roast so that most of the roast will be at the desired temperature. Cooking at a higher temperature will finish the roast faster, but you will probably result in well-done on the outside of the roast that gradually results in a medium-rare interior (if you are trying to cook a medium-rare roast). Roasting at 200°F will result in almost all the meat ending at medium-rare. Set your thermometer for 130°F for a medium-rare roast (125°F for rare; 145°F for medium; any higher and it's overdone - you might as well be serving a cheaper piece of beef). When the roast is done (about 45 minutes per pound up to about 5 pounds - anything larger takes roughly 4 to 5 hours), remove from the oven, set the roast aside, and let it sit to redistribute juices for at least twenty minutes. This is a good time to make a jus from the drippings of the roast. Pour off any extra grease that's collected in the pan. You can save this to make Yorkshire pudding if you wish. Now deglaze the pan by pouring in 1/2 cup beef broth and bring to a boil. After you've scraped off the bottom of your pan and mixed it into the jus, season with salt and pepper. Simple. When slicing the roast, first cut the rib bones out and then lie the roast on the cut side to carve large slices off the roast. When properly roasted, the medium-rare pink is uniform to the edges of the roast, giving the diner the maximum amount of tender, juicy beef per slice.