01 - In a mixing bowl, whisk together the gochujang, soy sauce, brown sugar, sesame oil, minced garlic, grated ginger, rice vinegar, mirin, and black pepper until smooth and well combined.
02 - Place the trimmed lamb ribs in a large resealable bag or shallow dish. Pour the marinade over the ribs, turning to coat evenly on all sides. Seal tightly and refrigerate for at least 4 hours, preferably overnight for deeper flavor penetration.
03 - Preheat the oven to 320°F. Remove the ribs from the marinade, reserving any excess. Arrange the ribs on a wire rack set over a roasting pan or baking sheet. Cover tightly with aluminum foil.
04 - Roast the covered ribs for 1 hour. While roasting, pour the reserved marinade into a small saucepan, stir in the honey, and simmer over low heat for 5 minutes until the mixture reduces into a thick glaze.
05 - Increase the oven temperature to 400°F. Uncover the ribs and brush generously on all sides with the honey-gochojang glaze using a basting brush. Return to the oven uncovered and roast for 10 to 15 minutes until deeply caramelized with slight charring at the edges.
06 - Remove the ribs from the oven and let rest for 5 minutes. Squeeze fresh yuzu juice generously over the surface of the ribs to brighten the rich flavors.
07 - Sprinkle with toasted sesame seeds, thinly sliced scallions, and sliced red chili. Serve immediately with steamed rice or pickled vegetables.