Common Questions
Do I have to tie the tenderloin?
If your roast is an even cylinder, you can skip it. If one end is thinner, tying every 1 1/2 to 2 inches helps it cook more evenly and look extra tidy when sliced.
What internal temperature should I cook it to?
Pull temperature matters because it climbs as it rests. Aim to remove the roast at:
- Rare: 120°F
- Medium-rare: 125°F (my favorite for tenderloin)
- Medium: 130°F
Expect a 5 to 10°F rise during rest, depending on roast size. That means your final temps will usually land around 125 to 130°F (rare), 130 to 135°F (medium-rare), and 135 to 140°F (medium).
USDA note: Whole-muscle beef like tenderloin is commonly served at lower temps than 145°F, but if you want a more conservative target, you can pull closer to 135 to 140°F and rest (final will land higher).
Where should I place the thermometer?
Probe the thickest center of the tenderloin. Avoid touching the pan or hitting a pocket of fat, which can throw off the reading.
Can I roast it without searing?
You can, but you will miss out on crust and the browned bits that make the sauce taste like you worked harder than you did. Sear is worth it.
What red wine is best for the pan sauce?
Use a dry red you would actually drink: Cabernet Sauvignon, Merlot, Syrah, or a red blend. Avoid sweet wines.
Can I make it ahead?
You can prep ahead easily: tie, season (dry brine), and chill the roast up to 24 hours. Cook close to serving for best texture. The sauce can be made 1 day ahead and reheated gently.
Why is my sauce bitter?
Usually it is from wine reduced too hard or garlic/shallots getting scorched. Keep the heat at a steady simmer, scrape the pan, and finish with cold butter to round things out.
Convection or regular oven?
Either works. Convection tends to cook a little faster and brown more aggressively, so start checking temperature a few minutes early.