My partner needed steak for a family dinner, so following my style she bought a whole porterhouse, and they ate about half of it
She eats low fat. Bulk meat comes untrimmed so has much more than supermarket or even butcher cuts
But it seems fair enough, easier for her and her mum to cut it off than for me to add fat
4 minutes each side in a very hot cast iron pan with a lid (to suppress the smoke)