Smoky Grilled Tri-tip with Herb Butter

Why This Smoky Grilled Tri-tip with Herb Butter Works

As the tri-tip sits with the olive oil and spices rubbed all over it, the salt starts pulling a little moisture to the surface. That mixes with the oil and seasonings and forms a thin, sticky coating on the meat. On the grill, this coating browns and darkens, so the outside of the roast gets a smoky crust while the inside stays juicy.

During grilling, starting over higher heat gives the outside some quick color, but the roast is not on there long enough for the inside to dry out. Once the heat is turned down, the center warms more slowly. The fat cap on top melts and runs over the meat, so the surface stays moist instead of drying and cracking.

Near the end, the herb butter goes on while the meat is still hot. The butter softens and runs into the browned surface, filling in all the little gaps and soaking into the crust. After the roast comes off the grill, resting lets the hot juices settle back into the center, so the slices stay moist instead of leaking all over the cutting board.

Mistakes To Avoid

Letting the tri-tip cook past 135°F turns the meat tough and dry instead of juicy. The muscle fibers tighten up and squeeze out the juices, so even with herb butter on top, the slices end up chewy and a bit stringy.

Starting with the grill too hot burns the outside before the center has time to warm through. The surface can get a hard, bitter crust while the middle stays undercooked, so by the time the inside reaches medium-rare, the outside is already overdone.

Skipping the rest at the end sends the juices running all over the cutting board instead of staying in the meat. The roast then tastes drier than it should, and the slices lose that tender, slightly pink center.

Putting the herb butter on too early causes it to melt off and burn on the grill grates. The butter blackens and smokes, and the meat ends up with greasy, scorched spots instead of a smooth, glossy coating.