Cooking beef tenderloin to the right temperature is crucial for achieving perfect doneness. For a rare roast, aim for an internal temperature of 120 to 125 F; for medium-rare, 130 to 135 F is ideal.
Head to one of these 13 restaurants that are open on the 25th, from the chic booths at Bob Bob Ricard to the art-deco dining room at Claridge’s Restaurant in Mayfair.