Preheat Oven to 350
Mix flour with 1/2 tsp of salt and the pepper on a plate
Heat 3 Tbsp. of the oil in a cast iron dutch oven
When the oil is hot, dredge veal shanks in the flour coating both sides.
Shake off excess oil, and sear in pot until browned. Roughly 3 minutes per side.
Remove meat from pot and set aside.
Add remaining oil, let heat, Add onion, carrot, celery, 2 tsp. of the garlic, bay leaves, and 1/2 tsp. salt. Cook till veggies are just tender stirring occasionally.
Add wine and lemon zest. Scrape the pot with a wooden spoon to loosen the good stuff up. Cook till reduced by half.
Add beef stock and cook till reduced by half.
Add Plum Tomatoes to the pot along with the Thyme, Rosemary, and remaining salt. Break the tomatoes up with a wooden spoon and cook for a few minutes.
Return the veal to the pot. The fluid should come up to 2/3 of the meat thickness.
Cover with lid, place in oven for 2 hours, turning meat every 30 minutes. Add more stock if sauce gets too thick.