The WALDORF-ASTORIA COOKBOOK opens the doors to the hotel's kitchens, where a team of seven chefs de cuisine, 10 sous-chefs, and 110 cooks, all led by Executive Chef John Doherty, serve the finest meals to a demanding public 24 hours a day, seven days a week at three restaurants, four bars and a grand ballroom, and, of course around-the-clock room service for 1,250 rooms (an innovation in the hotel industry that began at the Waldorf over a hundred years ago).