A method (700, 800) of tempering an organic product in an enclosed structure, wherein the enclosed structure contains a liquid used for tempering the organic product, the method comprising: introducing (702, 802) the organic product through an access means of the enclosed structure into the liquid, wherein the access means is opened during the introduction and is closed thereupon; maintaining the liquid at a predefined temperature by: circulating (704, 804) the liquid from the enclosed structure through a heating unit and back into the enclosed structure to increase a temperature of the liquid up to a predefined temperature, wherein the heating unit supplies heat to the liquid to increase the temperature up to the predefined temperature; and supplying carbon dioxide gas into the enclosed structure for a time period, wherein the time period is based on a temperature of the liquid in the enclosed structure, wherein the supplying comprises: initiating supply of carbon dioxide gas through a gas permeable structure (118, 502) connected to an inlet port of the enclosed structure when a temperature of the liquid in the enclosed structure falls below the predefined temperature, wherein an air-moving device positioned in the inlet port forces the carbon dioxide gas into the enclosed structure; and ceasing the supply of carbon dioxide gas into the enclosed structure when a temperature of the liquid in the enclosed structure reaches the predefined temperature; and removing (708, 820) the organic product through the access means of the enclosed structure when a core temperature of the organic product reaches the predefined temperature, wherein the circulation of the liquid and the supply of carbon dioxide gas is ceased before the removing of the organic product. introducing (702, 802) the organic product through an access means of the enclosed structure into the liquid, wherein the access means is opened during the introduction and is closed thereupon; maintaining the liquid at a predefined temperature by: circulating (704, 804) the liquid from the enclosed structure through a heating unit and back into the enclosed structure to increase a temperature of the liquid up to a predefined temperature, wherein the heating unit supplies heat to the liquid to increase the temperature up to the predefined temperature; and supplying carbon dioxide gas into the enclosed structure for a time period, wherein the time period is based on a temperature of the liquid in the enclosed structure, wherein the supplying comprises: initiating supply of carbon dioxide gas through a gas permeable structure (118, 502) connected to an inlet port of the enclosed structure when a temperature of the liquid in the enclosed structure falls below the predefined temperature, wherein an air-moving device positioned in the inlet port forces the carbon dioxide gas into the enclosed structure; and ceasing the supply of carbon dioxide gas into the enclosed structure when a temperature of the liquid in the enclosed structure reaches the predefined temperature; and circulating (704, 804) the liquid from the enclosed structure through a heating unit and back into the enclosed structure to increase a temperature of the liquid up to a predefined temperature, wherein the heating unit supplies heat to the liquid to increase the temperature up to the predefined temperature; and supplying carbon dioxide gas into the enclosed structure for a time period, wherein the time period is based on a temperature of the liquid in the enclosed structure, wherein the supplying comprises: initiating supply of carbon dioxide gas through a gas permeable structure (118, 502) connected to an inlet port of the enclosed structure when a temperature of the liquid in the enclosed structure falls below the predefined temperature, wherein an air-moving device positioned in the inlet port forces the carbon dioxide gas into the enclosed structure; and ceasing the supply of carbon dioxide gas into the enclosed structure when a temperature of the liquid in the enclosed structure reaches the predefined temperature; and initiating supply of carbon dioxide gas through a gas permeable structure (118, 502) connected to an inlet port of the enclosed structure when a temperature of the liquid in the enclosed structure falls below the predefined temperature, wherein an air-moving device positioned in the inlet port forces the carbon dioxide gas into the enclosed structure; and ceasing the supply of carbon dioxide gas into the enclosed structure when a temperature of the liquid in the enclosed structure reaches the predefined temperature; and removing (708, 820) the organic product through the access means of the enclosed structure when a core temperature of the organic product reaches the predefined temperature, wherein the circulation of the liquid and the supply of carbon dioxide gas is ceased before the removing of the organic product.