How long should it be cooked for it to be medium rare?? What temp??
What is the weight of the tenderloin?
Cook's Illustrated says roast in a 425 degree oven for about 45 minutes (5-6 pound tenderloin) to 125 degrees, then rest for half an hour.
It is 5-6 lbs. Thanks for the input!!!
Thanks wcbixby for the info!