Preparation

• In a small bowl, combine the rosemary and star anise with 2 tsp. kosher salt and 1 tsp. pepper. Coat the steak on both sides with the oil and rub the seasoning mix all over both sides, too. Set aside for half an hour at room temperature or, for even more flavor, wrap the steak in plastic wrap and refrigerate for at least 2 hours and up to 24 hours. (If refrigerating the steak, let it sit at room temperature for at least 15 min. before cooking it).
• Turn on your exhaust fan. Have ready a warm platter. Heat a heavy-based (preferably cast-iron) skillet that’s large enough to hold the steak over high heat until quite hot. (If not using cast iron, add 1 Tbs. oil to the pan and heat over medium-high heat.) Test by touching the steak to the pan surface; it will sizzle briskly when ready. Immediately drop in the steak and sear one side for 3 min. Sneak a peek to see if the steak is nicely browned. If not, continue to sear that side for another minute or so. Flip the steak and sear the other side for 3 min. Reduce the heat to medium-high if using cast-iron (medium if using another heavy pan), and cook for another 4 to 6 min. Flip and cook until a digital instant-read thermometer in the center of the meat reads 120°F for rare, 125°F for medium rare, and 130°F for medium, another 4 to 8 min., depending on thickness. Transfer the steak to the warm platter and let it rest, covered loosely with foil, for 5 to 7 min. To serve, slice the steak into 1/2-inch-thick strips, or cut the meat into four smaller pieces. Serve immediately.