A close-up image of a steak with a knife inserted into it, placed in a pan. The steak appears to be cooked to a medium-rare level, with a juicy and tender appearance. The pan is black and has a reflective surface, and there is a spoon resting on the edge of the pan. The image is overlaid with text that reads 'AMERICA'S TEST KITCHEN' and 'PORTERHOUSE STEAKS: Why bigger isn't always better'.