A freezer apparatus for treating a product with cryogen includes a source of cryogen liquid and a source of cryogen gas； a first conduit for delivering a first amount of the cryogen liquid； a second conduit in fluid communication with the first conduit for delivering a second amount of the cryogen gas into the cryogen fluid for being mixed therewith to provide a cryogen mixture having a ratio selected of cryogen gas:cryogen liquid； and a delivery apparatus in fluid communication with the first conduit downstream of the second conduit, the delivery apparatus including at least one outlet through which the cryogen mixture passes for contacting a surface of the product. A related method is also provided.
