What is tri-tip, exactly?
Tri-tip is a triangular roast from the bottom sirloin. It is leaner than ribeye but still nicely beefy, and it loves high heat plus a little rest time.
Do I need to marinate tri-tip?
Nope. A good rub and proper cooking will get you there. If you want a marinade for extra insurance, keep it simple and not too acidic. Too much acid for too long can leave the outside a little soft in a way nobody asked for.
Should I trim the fat cap?
Tri-tip often comes with a fat cap. I like to leave about 1/4 inch for flavor. If it is thicker, trim it down. You can also lightly score the fat (shallow cuts, don’t hit the meat) to help it render.
What temperature should I cook tri-tip to?
- Rare: pull at 120 to 125°F, rest to about 125 to 130°F
- Medium-rare: pull at 125 to 130°F, rest to about 130 to 135°F
- Medium: pull at 135°F, rest to about 140°F
I recommend medium-rare for the best balance of tenderness and flavor.
Food safety note: For whole cuts of beef, safety is mostly about good handling and cooking the outside thoroughly. Final internal temp is preference-based, so use a thermometer and cook to the doneness you like.
Why is my tri-tip tough?
The usual culprits are (1) cooking past medium, (2) slicing with the grain, or (3) skipping the rest. Tri-tip’s grain changes direction, so you may need to rotate the roast halfway through slicing.
How do I slice tri-tip correctly?
Look for the lines of muscle fiber and slice against them. On many tri-tips, the grain shifts near the “point” end. A simple trick: start slicing at the point, and when you see the grain change direction, rotate the roast and keep slicing against the grain.