Preheat oven to 325F. Coat short rib generously in salt and pepper
Coat large dutch oven with olive oil, place on high heat until smoking, Add short rib without moving until well browned on one side, about 4 min
Flip short rib and add onion and garlic. Stir occassionally until other side of short rib is browned and garlic and onions are softened but not fully browned
Add red wine, brong to boil and let it simmre for a minute
Add beef broth, worcestershire sauce, balsamic vinegar, bay leaves, and orange zest. Stir and return to a boil
Cover and transfer to oven to cook for 3-4 hours, flipping once at the halfway point
Discard bay leaves and orange zest. Plate meat and spoon sauce over top