How To Cook A Tri Tip On The Grill

ByLily

Grilling tri-tip requires building a two-zone fire so you can sear the outside while keeping the inside juicy. If you want to know how to cook a tri tip on the grill the right way, you need to treat it like a cross between a steak and a small roast. This cut comes from the bottom sirloin and has a distinct triangular shape. It’s lean, flavorful, and cooks fast when done correctly.

Most people ruin tri-tip by using high heat the whole time. That dries out the meat and leaves the center tough. The two-zone method solves this problem. You get a hard sear for crust and a cooler side to finish the meat gently.

Below is a complete guide. You’ll learn about seasoning, fire setup, cooking times, and slicing. Follow these steps and you’ll get consistent results every time.

What You Need Before You Start

Gather your tools and ingredients first. This keeps you from running around once the grill is hot.

  • One whole tri-tip roast (2 to 3 pounds)
  • Kosher salt and coarse black pepper
  • Garlic powder or your favorite rub
  • Instant-read meat thermometer
  • Aluminum foil
  • Sharp carving knife
  • Cutting board
  • Tongs

You also need a grill with a lid. Charcoal or gas both work fine. A charcoal grill makes the two-zone setup easier, but gas works with a little planning.

Choosing The Right Tri Tip

Look for a roast with good marbling. The fat cap should be trimmed to about a quarter inch. If the roast has a thick layer of fat on one side, leave some of it on. That fat bastes the meat as it cooks.

If you buy a pre-marinated tri-tip, skip the dry rub. Otherwise, a simple salt and pepper blend works best. Some people use a Santa Maria style rub with garlic salt, parsley, and black pepper. That’s a classic choice for this cut.

How To Cook A Tri Tip On The Grill

This is the core method. Read these steps once before you light the fire. Then follow them in order.

Step 1: Season The Meat

Pat the roast dry with paper towels. Moisture on the surface stops browning. Apply salt and pepper generously on all sides. Use more than you think you need. Some of it falls off during grilling.

Let the seasoned meat sit at room temperature for 30 minutes. Cold meat cooks unevenly. This rest also lets the salt absorb into the meat.

Step 2: Set Up A Two Zone Fire

For a charcoal grill, pile hot coals on one half of the grill. Leave the other half empty. Put the lid on and let the grate heat up for five minutes. The hot side is for searing. The empty side is for indirect cooking.

For a gas grill, turn the burners on one side to high. Leave the other side off. Close the lid and preheat for 10 minutes. Clean the grates with a wire brush right before you put the meat on.

Step 3: Sear Both Sides

Place the tri-tip over the hot zone. Sear for 4 to 5 minutes per side. You want a dark brown crust. Don’t move the meat around. Let it sit and develop color.

If flare-ups happen, move the roast to the cool side for a moment. Then put it back over the coals. Keep the lid open during searing so you can watch the meat.

Step 4: Move To Indirect Heat

After searing, slide the tri-tip to the cooler side of the grill. Close the lid. Cook for 15 to 25 minutes, depending on the size of the roast and the heat of your grill.

Check the internal temperature after 12 minutes. Insert the thermometer into the thickest part of the meat. Aim for 130°F for medium-rare. Pull the meat at 125°F because the temperature rises as it rests.

For medium, target 135°F to 140°F. Anything above 145°F gets dry fast. Tri-tip has little fat, so overcooking is a real risk.

Temperature Guide For Tri Tip

  • Rare: 120°F to 125°F
  • Medium-rare: 130°F to 135°F
  • Medium: 140°F to 145°F
  • Well done: 150°F and above (not recommended)

Step 5: Rest The Meat

Move the roast to a cutting board. Tent it loosely with foil. Let it rest for 10 minutes. This step is not optional. Resting allows the juices to redistribute inside the meat. If you cut it right away, the juice runs out and the meat tastes dry.

Step 6: Slice Against The Grain

This is where many people make a mistake. Tri-tip has two different grain directions. Look at the roast before you cut. Find the point where the grain changes direction.

Cut the roast in half at that point. Then slice each half against the grain into thin pieces, about a quarter inch thick. Cutting with the grain makes the meat chewy. Cutting against it makes it tender.

Use a sharp knife and long, smooth strokes. Don’t saw back and forth. Let the knife do the work.

Tips For Better Results

These small details make a big difference. Keep them in mind next time you grill.

  • Let the grill get hot before adding meat. A cold grate causes sticking.
  • Don’t poke the roast with a fork. Use tongs to flip it.
  • If the crust is browning too fast, move the meat to the cool side sooner.
  • Wind and cold weather affect cooking times. Add a few minutes on chilly days.
  • Let leftover tri-tip cool fully before storing. It keeps in the fridge for three to four days.

You can also slice the meat thin and use it for sandwiches the next day. It works great in tacos or on a salad.

Common Mistakes To Avoid

Most bad tri-tip comes from a few simple errors. Avoid these and your roast will turn out well.

  • Cooking over high heat the entire time
  • Skipping the rest period
  • Slicing with the grain instead of against it
  • Not using a meat thermometer
  • Cutting the roast before it rests

The thermometer is the most important tool here. Guessing doneness by look or feel does not work with this cut. A ten dollar thermometer saves an expensive roast.

Once you practice this method a couple times, you will not need to check the clock. You will know how the meat feels and smells when it’s ready. Until then, follow the steps and trust the numbers.

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