An apparatus for cooling food or beverages, the apparatus comprising: an air chiller including first and second chiller ports; a galley cart which includes a storage enclosure, the storage enclosure defining a compartment and having a first opening and a second opening, which permits air to pass between an entirety of the compartment and the outside of the enclosure, the entire compartment being a volume through which all of the air flows; a duct system coupled to the first and second chiller ports (108,110) and to the first and second openings (43,45), and a control circuit configured to determine whether a temperature difference between the top of the compartment and the bottom of the compartment exceeds a predetermined threshold; characterized in that the air chiller further comprises a fan having forward and reverse settings which alternately produce blowing and suction through the first and second chiller ports (108,110), wherein chilled air flows from the entire storage enclosure through the first chiller port into the duct system in a first airflow direction when the fan operates in the forward setting, and chilled air flows from the entire storage enclosure through the second chiller port into the duct system in a second airflow direction, that is substantially opposite the first airflow direction, when the fan operates in the reverse setting, and wherein the control circuit is configured to periodically initiate switching the fan from the forward setting to the reverse setting based on the determination whether a temperature difference between the top of the compartment and the bottom of the compartment exceeds a predetermined threshold. an air chiller including first and second chiller ports; a galley cart which includes a storage enclosure, the storage enclosure defining a compartment and having a first opening and a second opening, which permits air to pass between an entirety of the compartment and the outside of the enclosure, the entire compartment being a volume through which all of the air flows; a duct system coupled to the first and second chiller ports (108,110) and to the first and second openings (43,45), and a control circuit configured to determine whether a temperature difference between the top of the compartment and the bottom of the compartment exceeds a predetermined threshold; characterized in that the air chiller further comprises a fan having forward and reverse settings which alternately produce blowing and suction through the first and second chiller ports (108,110), wherein chilled air flows from the entire storage enclosure through the first chiller port into the duct system in a first airflow direction when the fan operates in the forward setting, and chilled air flows from the entire storage enclosure through the second chiller port into the duct system in a second airflow direction, that is substantially opposite the first airflow direction, when the fan operates in the reverse setting, and wherein the control circuit is configured to periodically initiate switching the fan from the forward setting to the reverse setting based on the determination whether a temperature difference between the top of the compartment and the bottom of the compartment exceeds a predetermined threshold.