2 tablespoons finely chopped fresh basil or cilantro leaves
2 to 3 teaspoons minced serrano chile pepper
2 teaspoons lime juice
1/2 teaspoon kosher salt
1/4 teaspoon freshly ground black pepper
3 tablespoons extra-virgin olive oil
1 teaspoon ancho chile powder
1 teaspoon ground cumin
Kosher salt and freshly ground black pepper
1 1/2 to 2 pounds tri-tip roast
1 15-ounce can black beans
1 1/2 cups thinly sliced hearts of romaine
1/2 cup crumbled or coarsely grated Cotija or queso fresco cheese (2 ounces)
Directions
Prepare the grill for direct and indirect cooking over medium heat (350° to 450°F).
Brush the cooking grates clean. Grill the corn over direct medium heat, with the lid closed, until browned in spots and tender, 10 to 15 minutes, turning occasionally. Remove from the grill and, when the corn is cool enough to handle, cut the kernels off the cobs and put the kernels in a medium bowl. Add all the remaining salsa ingredients and mix well. (The salsa can be made up to 6 hours ahead. Cover and refrigerate. Let stand at room temperature for 1 hour before serving.)
In a small bowl mix together 2 tablespoons of the oil, the chile powder, the cumin, 1 teaspoon salt, and 1/2 teaspoon pepper. Spread the mixture all over the tri-tip. Let the tri-tip stand at room temperature for 15 to 30 minutes before grilling.
Grill the tri-tip over direct medium heat, with the lid closed, until well marked on both sides, 8 to 10 minutes, turning once. Move the tri-tip over indirect medium heat, close the lid, and cook to your desired doneness, 15 to 20 minutes for medium rare. Remove from the grill and let rest for about 5 minutes.
Meanwhile, in a heavy, medium saucepan over low heat on the stove, combine the beans and the remaining 1 tablespoon oil and cook until heated through, about 5 minutes, stirring once or twice. Remove from the heat and season with salt and pepper.
Cut the meat across the grain into very thin slices. Serve right away with the black beans, lettuce, corn salsa, and cheese.