A delivery apparatus and method for delivering liquid cryogen to a chilling application includes a liquid cryogen feed tank; a liquid cryogen conduit in fluid communication between the feed tank and the application, wherein the feed tank is in fluid communication with a vessel which is in fluid communication with the conduit between the feed tank and the application; a weight measurement device for controlling the weight of liquid cryogen to be delivered to the application through the conduit; a flow controller for controlling the speed of delivery of the liquid cryogen to the application; wherein the application utilizes the liquid cryogen and produces an exhaust gas; a device for measuring the temperature of the exhaust gas, the device in operative communication with the flow controller; wherein the flow controller is configured to vary the speed of delivery of liquid cryogen from the vessel through the conduit in response to the temperature of the exhaust gas.