A triangular muscle off the bottom sirloin, popularised on the central California coast and largely unknown elsewhere until recently. Lean, well-flavoured, and notorious for one thing: the grain changes direction partway through, so half of any carved tri-tip is sliced wrong.
The tri-tip is the tensor fasciae latae, a triangular muscle at the bottom of the sirloin near the hip, weighing one and a half to two and a half pounds. It has a fat cap on one side and tapers from a thick end to a thin point, which is the first problem — the tip is done well before the thick end. The second and more serious problem is that the muscle fibers run in two distinct directions that meet at an angle roughly in the middle, so a single straight cut across the roast will be across the grain for one half and along it for the other. Correct carving means finding the junction, cutting the roast in two at that point, and slicing each half separately.
Leaner than a ribeye with a moderate amount of intramuscular fat and enough connective tissue that it benefits from being cooked no further than medium-rare. It's thick enough to hold a real temperature gradient, which is why the reverse sear suits it so well — a hot-and-fast cook gives a grey band around a rare centre, while a slow approach followed by a sear gives an even interior with a crust. Its leanness also means it takes smoke well and dries quickly past 140°F, since there is no marbling to compensate. The traditional Santa Maria treatment — red oak coals, salt, pepper and garlic — works because the muscle's own flavour is strong enough not to need more.
The tapering shape and lean muscle both benefit from a slow even climb, and the sear at the end handles the crust the low heat can't.
HowSalt an hour or more ahead. 250°F oven or indirect grill to 120-125°F, forty-five minutes to an hour. Rest ten, then sear hard over direct coals or in cast iron, ninety seconds a side.
The traditional method, cooking over live coals with the roast raised and lowered to control heat, which gives a smoky char the oven can't.
HowRed oak if you can get it. Fat cap down over direct heat to render and colour, ten minutes, then moved to indirect, fat cap up, twenty to thirty minutes to 130°F. Rub is salt, black pepper and granulated garlic — nothing else.
Takes smoke well and cooks fast enough for a weeknight, unlike brisket, which is why it's sometimes called the poor man's brisket.
How225-250°F to 125°F internal, about ninety minutes, then a hard sear. Do not take it to brisket temperatures — it has none of brisket's fat and will be dry and crumbly.
Sidesteps the taper entirely, since the thin end can't overshoot a bath set to the target temperature.
How130-133°F for four to six hours, then dried thoroughly and seared hard. Longer holds soften the connective tissue further without raising doneness.
The carving error is the one that defines this cut. Tri-tip's fibers run in two directions meeting at an angle near the middle of the roast, so slicing straight across the whole thing means half the slices are cut along the grain, leaving long intact fibers that chew like rope. The meat can be cooked perfectly and still be described as tough purely because of this. Find the seam where the grain changes, cut the roast into two pieces there, then slice each piece across its own grain. The second error comes from the nickname: tri-tip is sometimes sold as a budget brisket, and taken to brisket's 200°F+ it falls apart into dry crumbs, because it has neither the fat nor the collagen that lets brisket survive that. It is a lean roast that stops at 130-135°F.
Widely available on the US west coast and increasingly elsewhere; ask for bottom sirloin tri-tip if the counter doesn't know the name. Buy it with the fat cap on and trim it yourself to about a quarter inch — many are sold trimmed bare, which removes the basting and the flavour. One and a half to two and a half pounds is standard and feeds four to six. Look for even marbling; a very lean tri-tip has nothing to give at medium-rare. Untrimmed and bone-in versions are rare. It is usually priced between chuck and ribeye, which makes it one of the better value-per-flavour cuts in the case.
Doneness: 125-130°F pulled, resting to 130-135°F for medium-rare. It is a lean cut and 140°F is already noticeably dry. Rest ten to fifteen minutes, then find the grain junction before carving.
Look at the surface of the cooked roast before cutting — the fiber direction is visible, especially after a sear. You'll see lines running one way from the thick end and another way from the tip, meeting at a rough diagonal near the middle. Cut the roast in two along that line first, then turn each piece and slice across its own fibers. If you can't see it, cut the roast in half at its widest point and check the grain on each cut face before slicing further.
Only in the sense that it's a cheaper beef roast that takes smoke well. Compositionally they're opposites: brisket is heavily collagenated and fatty and needs to reach 200°F+ for hours, tri-tip is lean and needs to stop at 130°F. Following brisket instructions on a tri-tip destroys it. The nickname causes more bad dinners than it prevents.
You increasingly can, but historically most of the US ground this muscle into hamburger — it's a small awkward triangle that doesn't fit the standard retail cutting pattern. Santa Maria in central California developed it as a barbecue cut in the mid-twentieth century and it stayed regional for decades. Butchers elsewhere will often cut one for you from the bottom sirloin if you ask by the anatomical name.