1. Season the steak with salt and pepper. Rub the oil all over.
2. Heat a non-stick pan until smoking hot and put the steak in the pan, fatty side down. Fry for 2-3 minutes or until the fat changes colour and starts rendering.
3. Turn over and fry the other side until a golden brown crust has formed. Tip the steak to the side and fry the edge for a minute to seal, then repeat with the other edge.