Usually at Christmas I'll spend a little more for a nice piece of meat. This year I picked up a prime beef tenderloin at Costco. Question I have is how do I get this thing to medium rare reliably? It sounds like a silly question, but I have a ThermoWorks microdot thermometer that I have used over the years that has consistently led to several medium/medium well cooks. I have tested the thermometer with boiling water and it appears to test out within a degree or two of 212. Not sure if I'm placing it in the meat incorrectly but I usually pull beef around 125 and it consistently comes out medium/medium well and I don't want to ruin a very expensive cut of meat. Your help is much appreciated.
What might I be doing wrong? What do you do to ensure a good cook? I intend to throw it in on broil to sear it and then turn the temp down and gradually cook it to temp.
What might I be doing wrong? What do you do to ensure a good cook? I intend to throw it in on broil to sear it and then turn the temp down and gradually cook it to temp.

