A method for manufacturing a packed product includes the steps of: a) bringing a product into a superheated steam atmosphere with an O2 content of maximum 10 vol.-%, a pressure of between 950 mbar and 1100 mbar and a temperature of minimum 100° C., b) making available a packing container in the steam atmosphere and filling the packing container with a predetermined quantity of the product, wherein a residual volume of the packing container not filled with product is filled with the steam atmosphere, c) replacing at least 50% of the residual volume of steam atmosphere in the packing container by a sterile inert gas, d) sealing the packing container, and e) cooling the packing container and the product contained therein to a temperature of between 10° C. and 25° C.
