Check the beef tenderloin temperature with a meat thermometer to ... When the thermometer reads 135°F, your roast will be medium rare; when it reads 150°F, your tenderloin will be medium.

The other is inserted into the cooked joint after roasting. Recommended temperatures for beef are: Rare 60C; medium 70C; well done 80C. Baste the meat with the juices at least three times during ...