The 18-foot kitchen island, topped with stainless steel, holds a six-burner Gaggenau cooktop; the spidery Philippe Starck W.W. stool is from Vitra. Custom cabinets fronted in American black walnut lend a warming note to the room; perforations in the camouflaging panels ventilate the built-in Sub-Zero refrigerator; the built-in coffee center, by Miele, stands at the ready in a quadrant of stainless steel set into the walnut.