Add onions, carrots, and celery and cook over medium-high heat, stirring often, 5 minutes or until onions begin to brown. Add brown sugar and tomato paste and cook 2 minutes, stirring constantly.
Stir in wine, scraping up all brown bits from the bottom of the pot, then add short ribs with any accumulated juices. Bring to a boil; lower heat to medium and simmer 25 minutes or until wine is reduced by half. Add stock, tomatoes with their juice, garlic, herbs and reserved bacon and bring to a boil over high heat. Cover and transfer to oven.