Method

• Put the steaks in a shallow dish, then mix the red wine, Worcestershire sauce, garlic and rosemary together and pour this over the steaks
• Cover with plastic wrap or put the lid on, then place in the fridge for a few hours or, preferably, overnight
• When you're ready to cook the steaks, drain and dry them carefully with kitchen paper, reserving the marinade
• Now take a medium frying pan, place it on a high heat and heat the oil until it's very hot
• Then sear the steaks for 4 minutes on each side and, 2 minutes before the time is up, add the reserved marinade to the pan and let it bubble and reduce by about half
• When the steaks are cooked, remove them from the pan to warm serving plates