Step 1: Prepare the Pork : Choose a tender cut such as pork shoulder or pork belly. Slice it thinly—partially freezing the meat for 15 minutes helps make slicing easier.
Step 2: Make the Marinade : In a large mixing bowl, combine gochujang, gochugaru, soy sauce, brown sugar, rice wine, sesame oil, garlic, ginger, onion, and green onions. Mix well until the sauce is smooth and evenly blended.
Step 3: Marinate the Pork : Add the sliced pork to the marinade, coating every piece thoroughly. Cover and refrigerate for at least 30 minutes (up to overnight for deeper flavor).
Step 4: Cook the Pork Bulgogi : Heat 1 tbsp vegetable oil in a large skillet or wok over medium-high heat. Add the marinated pork in a single layer (cook in batches if necessary). Stir-fry for 8–10 minutes, until the pork is cooked through and slightly caramelized. Let the sauce thicken slightly in the pan—it should cling to the meat and look glossy.
Step 5: Serve Spoon hot: steamed rice into bowls. Top with generous portions of spicy pork bulgogi. Garnish with toasted sesame seeds and sliced green onions. Serve with a side of kimchi for authentic Korean flair.