01 - Preheat oven to 325°F.
02 - Pat the beef roast dry with paper towels. Season all sides with salt and pepper.
03 - Heat a large Dutch oven over medium-high heat. Add 1 tbsp oil and sear the roast on all sides until deep golden brown, about 3–4 minutes per side. Remove the roast and set aside.
04 - Add the onion to the pot and sauté for 2–3 minutes until slightly softened.
05 - In a bowl, whisk together soy sauce, beef broth, brown sugar, rice vinegar, gochujang, sesame oil, honey, ginger, and garlic.
06 - Return the roast to the pot. Scatter carrots, daikon, and scallions around the meat. Pour the sauce mixture over the roast and vegetables.
07 - Bring to a simmer, then cover and transfer to the preheated oven. Roast for 3 hours, or until the beef is very tender and easily shreds with a fork.
08 - Remove the roast and vegetables to a platter. Skim excess fat from the sauce and reduce on the stove if desired for a thicker consistency. Slice or shred the beef. Spoon sauce and vegetables over the top. Garnish with sesame seeds and sliced scallions before serving.