Sage the Dynamic Duo Espresso Machine and Coffee GrinderSage the Dynamic Duo Espresso Machine and Coffee Grinder Adjustable dose control grinder included. At the heart of this machine is it's dual boiler heating system. The boiler, for the espresso shot, is PID temperature controlled, while a separate steam boiler offers instant and powerful steam on demand. So you can extract your shot at the right temperature, delivering optimal flavor, while simultaneously steaming your milk to cafe quality. The