NYT Cooking: These meatballs, inspired by traditional Korean barbecue, bring the savory-sweet flavors of caramelized meat without the need for a grill. As the meatballs bake, the soy sauce marries the garlic and scallions to create a glaze. This meatball mixture can be made ahead and left to marinate in the fridge for 3 hours or even overnight. Use ground beef that is 85 percent lean meat, 15 percent fat, or 8