Dab meat dry, wrap with bacon and tie up with kitchen string. Heat oil in an ovenproof pan or a flat roasting pan. Brown the meat thoroughly all around, season with salt and pepper.
Cook in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for nine minutes. Remove the meat from the roaster, wrap in aluminium foil and leave to rest. Peel shallots and cut into fine cubes.
Deglaze the meat with red wine and beef stock. Add shallot, bring to the boil and reduce to half the liquid over high heat. Add vodka and tomato juice, bring to the boil and cook for another five minutes.
Season to taste with pepper and a little celery salt. Arrange medallions and sauce. Serve with potato gratin or polenta.