Beef Dumpling Stew

Preheat the oven to 180C/350F/Gas 4. For the beef stew, heat the oil and butter in an ovenproof casserole and fry the beef until browned on all sides. Sprinkle over the flour and cook for a further 2-3 minutes. Add the garlic and all the vegetables and fry for 1-2 minutes. Stir in the wine, stock and herbs, then add the Worcestershire sauce and balsamic vinegar, to taste. Season with salt and freshly ground black pepper. Cover with a lid, transfer to the oven and cook for about two hours, or until the meat is tender. For the dumplings, sift the flour, baking powder and salt i