In a large mixing bowl, whisk together soy sauce, brown sugar, sesame oil, minced garlic, grated ginger, rice wine, honey, black pepper, and grated pear (if using) until sugar dissolves.

Place thinly sliced beef into the marinade, making sure every piece is well-coated. Add chopped green onions and toss together.

Cover the bowl with plastic wrap and refrigerate for at least 1 hour, preferably 3-4 hours or overnight.

Remove beef from refrigerator 15 minutes before cooking to bring to room temperature.

Heat a large skillet or grill pan over high heat. Add marinated beef in a single layer and cook for 2-3 minutes per side until caramelized and cooked through.

Transfer to a serving platter, sprinkle with sesame seeds and extra green onions. Serve immediately.