Cook the rice: Combine rice, water, and bone broth paste in a small pot. Bring to a boil, cover, reduce heat to low, and cook for 12–15 minutes until absorbed. Rest covered for 5 minutes. OR cook in a rice cooker.
Brown the beef: Heat oil in a pan over medium-high heat. Cook beef mince with garlic, chilli, and ginger paste until fully browned. Season with salt and pepper. Set aside.
Char the pak choy: In the same pan, place pak choy halves cut-side down. Cook undisturbed for 2–3 minutes until charred. Flip briefly, remove and set aside.
Build the broth: Sauté garlic, chilli, and ginger for 1 minute. Add gochujang paste and cook for another minute. Pour in chicken stock, soy, sweetener, bone broth paste, and rice wine vinegar. Simmer for 5 minutes.
Reduce heat to low. Stir in milk or coconut milk and simmer gently for 1-2 minutes. Squeeze in lime juice. Taste and adjust seasoning.
Divide rice between 2 bowls. Ladle broth over rice. Top with beef and pak choy. Finish with green onion, sesame seeds, chilli oil, or extra lime.