This traditional soup is out of favour these days, but it can be a real winter warmer. You could easily cheat and blend braised beef or oxtail with stock and a little cream sherry.
Cut the braising steak into bite-sized pieces. Heat the oil in a large heavy-based saucepan and fry the meat and vegetables, stirring over a high heat until nicely browned.
Add the butter to the pan and stir, then add the flour and cook, stirring, for another couple of minutes. Add the tomato purée, garlic, thyme and bay leaf, then gradually add the beef stock,