The reverse sear is the most precise way to cook a tri tip. You bring the interior up to temperature slowly with low indirect heat, then finish with an aggressive sear on a scorching hot grill or cast iron skillet. The result is edge-to-edge pink with a hard, flavorful crust and no gray band. That's the band of overcooked meat between the surface and the medium-rare center that direct-heat cooks always have.
Phase 1: Low and Slow
Set your grill or oven to 250°F. On a charcoal grill, run a two-zone fire with the meat on the cool side; on a kamado, use a heat deflector; in an oven, place the tri tip on a wire rack over a sheet pan. Insert a probe thermometer. Cook until the internal temperature reaches 115 to 120°F, about 45 to 60 minutes for a 2 to 3 pound roast. The low temperature moves heat inward slowly, giving you that uniform doneness from edge to center.
Phase 2: The Sear
While the tri tip is in the slow phase, get your sear station screaming hot. A charcoal chimney full of lit coals with a grate on top is the best option. You'll hit 700°F+ at the grate level. A cast iron skillet on the stovetop over the highest flame works too. Add a high-smoke-point oil (avocado or refined peanut) to the skillet.
Sear the tri tip for 90 seconds to 2 minutes per side. You want a dark, almost black crust. The interior is already at temperature, so the sear is purely for surface flavor. Don't worry about overcooking. The exposure time is too short to push the center past medium-rare.
Rest and Serve
Rest for 10 minutes. The total carryover will bring you from 120°F to 128–132°F. Slice against the grain, same as always.
Why Reverse, Not Standard
Standard sear-then-cook builds a great crust but the interior temperature is uneven. The outer ¼-inch overcooks while the heat works its way to the center. Reverse sear pre-heats the interior gently first, then the sear only happens to a surface that's already at temperature. The result is medium-rare from edge to edge with a crust that's just as good. The best method for thick tri tips (2½ inches or more at the heel); thinner cuts don't benefit as much because the slow phase is too short to create a meaningful temperature gradient.