Braised Oxtails In Cabbage Leaves On Mashed Potatoes

• 8 cabbage leaves
• 6 garlic (cloves)
• 4 oxtails
• 4 italian parsley sprigs
• 3 bay leaves
• 475 ml tomatoes with their juices (canned plum)
• 475 ml wine (red)
• 240 gr onion (diced)
• 190 gr carrot (diced)
• 55 gr bread crumbs