In a large bowl, combine soy sauce, brown sugar, rice wine, sesame oil, garlic, ginger, black pepper, and grated onion. Mix well to form the marinade.
Add the Korean short ribs to the marinade, ensuring they are fully coated. Cover the bowl and marinate in the refrigerator for at least 4 hours, or preferably overnight.
Preheat oven to 325°F (163°C).
Place the marinated short ribs in a Dutch oven or oven-safe pot. Pour the remaining marinade over the ribs.
Cover the pot and bake in the preheated oven for 3 hours, or until the short ribs are very tender and easily shred with a fork.
Remove the pot from the oven and let the short ribs rest for 10 minutes before serving.
Serve hot with rice and your favorite side dishes. Garnish with sesame seeds and chopped green onions, if desired.
Notes
Enjoy this delicious Korean Short Ribs recipe! Feel free to adjust the sweetness and spiciness to your liking.