Execution
Follow the master commands
Preheat the oven to 220C/425F/Gas 7
Heat the vegetable oil in a large frying pan, and brown the beef all over. (You may need to do this in batches.) Set aside, then brown the kidneys on both sides in the same pan. Add the onions and cook for 3-4 minutes.
Return the beef to the pan, sprinkle flour over and coat the meat and onions




