2In a mixing bowl, combine Soy sauce, Brown sugar, minced Garlic, Sesame oil, Black pepper, and grated Asian pear to create the marinade.
3Add the sliced Beef sirloin and half of the sliced Yellow onion to the marinade. Mix thoroughly to ensure all pieces are coated. Cover and refrigerate for at least 30 minutes, or up to 2 hours, allowing the Beef sirloin to absorb the flavors.