By Mayo Clinic Staff. Yellow tongue â a yellow discoloration of your tongue â is usually a temporary, harmless problem. Most often, yellow tongue is an early sign of a disorder known as black hairy tongue. Rarely, yellow tongue may be a sign of jaundice, a yellowing of the eyes and skin, which sometimes indicates liver or gallbladder problems.
Grab a shallow pan and place the prime rib in it with the bone side facing down. Roast it at 450 degrees F for 15 minutes to sear the outside, and then turn the oven down to 350 degrees F. Continue roasting the prime rib for 45 to 90 minutes, depending on how done you like your meat. Check it by inserting an instant-read thermometer in the meatiest part of the roast.
4 Place the roast fat side up and rib bones down in a roasting pan. Insert a meat thermometer into the thickest part of the roast, making sure that the thermometer isn't touching a bone. 5 After browning the roast at a 500Â°F temperature in the oven for 15 minutes, reduce the oven temperature to 325Â°F.To figure out the total cooking time, allow about 13-15 minutes per pound for rare and 15-17 minutes per pound for medium rare.heck the temperature of the roast using a meat thermometer 30 to 45 minutes before you expect the roast to be done. For example, with a 10 pound roast, you would expect 2 1/2 hours of total cooking time (15 minutes at 500Â° and 2 1/4 hours at 325Â°).