Barbecued Roast Beef on a Bun

Instructions

• Mix salt, sugar, pepper, and cayenne for dry rub together and coat beef well on both sides.
• Place on a rack set on a sheet pan and refrigerate, uncovered, for 12 to 24 hours, flipping over halfway through.
• Mix barbecue sauce, vinegar, mustard, turmeric, and garlic together for wet rub and reserve.
• Transfer beef to a dish and pour 1/2 of the wet rub over top. Use two forks to poke the surface all over for about 1 minute. Turn beef over and repeat with remaining wet rub. Spoon any excess on the bottom over the top.
• Cover and refrigerate for 4 to 12 hours.
• Preheat a charcoal grill until the briquettes turn white and ashy. Remove meat from the refrigerator, uncover, and scrape off excess wet rub.
• Grill over hot charcoal until blackened and an instant-read thermometer inserted into the center of the meat reads 120 to 125 degrees F (49 to 52 degrees C), 7 to 10 minutes per side, or to desired doneness. Remove to a foil-lined plate, and quickly wrap up tightly in foil.
• Let rest for at least 15 minutes, during which time the meat will finish cooking, and end up close to medium-rare.
• Slice very thinly, toss in the meat drippings and juices left in the foil, and serve on buns.