Perfect Roast Beef

Directions

1. 1
   Rub with Olive oil, salt and pepper, sprinkle a little flour over the top (fat) side, heat tray over gas and seal off all sides, then 15 mins at gas mark 8, 230 C or 450 F, reduce down to Gas Mark 5, 190 C or 375 F, cook for 17 mins per 450g (1 lb). Plus 15 mins at the end. Less the last 15 mins for rare or add another 15 mins for well done.