The argument is heat. Beyond the kitchen's working wall, where copper and stone gave way to culinary theater, the same commitment to thermal mastery reveals itself in an entirely different register—a private spa and sauna suite where steam rises not from stockpots but from heated basalt, where the body becomes the thing being carefully, deliberately finished. The transition feels intentional rather than incidental, as though the architect understood that a home calibrated to nourish at this level must also know how to restore. What the kitchen did for appetite, this room does for everything else—and it sets a quieter stage for the gathering spaces that follow.