01 - In a medium mixing bowl, whisk together soy sauce, brown sugar, vinegar, sesame oil, honey, and mirin until the sugar is completely dissolved.
02 - Add minced garlic, grated ginger, sliced green onions, ground black pepper, and chili flakes if using. Stir well to evenly distribute aromatics.
03 - Mix in grated pear or apple and toasted sesame seeds for extra tenderness and depth of flavor as desired.
04 - Place beef short ribs in a large zip-top bag or non-reactive container and pour marinade over them, ensuring complete coverage.
05 - Seal the bag or container and refrigerate for a minimum of 4 hours, preferably overnight for optimal tenderness and flavor infusion.
06 - Remove short ribs from the marinade, allow excess to drain, and proceed to grill, roast, or braise as preferred.