Carbonized water dispensing device comprising: - a carbonized water dispensing outlet, for dispensing a single serve carbonized water volume into a beverage container; - a cold water source; - a CO2 source; - a water line, which preferably is a chilled water line, the water line extending between the cold water source and a dispensing outlet; - a water carbonation system comprising a carbonator, preferably an in-line carbonator provided in the water line, for adding CO2 from the CO2 source to the water flowing through the water line from the cold water source to the carbonized water dispensing outlet, the CO2 preferably being added at a water pressure in the range of 5-9 bar; - a user interface comprising a control device configured to receive a beverage dispensing order, and subsequently actuate the carbonized water dispensing device to dispense a single serve volume of carbonized water; wherein the water carbonation system further comprises: - a carbonized water conditioning chamber, which conditioning chamber is provided downstream of the carbonator and upstream of the carbonized water dispensing outlet, for receiving a mixture of carbonized water mixed with unresolved CO2, which conditioning chamber is dimensioned to hold a single serve of carbonized water with a headspace, and which carbonized water conditioning chamber is provided with: - an outlet valve for in a closed condition enabling the carbonized water conditioning chamber to hold the single serve volume of carbonized water, and for in an open condition allowing the single serve volume of carbonized water to flow out of the carbonized water conditioning chamber and subsequently out of the carbonized water dispensing outlet into a beverage container; - a gas outlet for in a closed condition preventing unresolved CO2 from escaping the conditioning chamber and thus enabling a pressure increase, preferably a pressure increase of up to 0,25 - 4 bar or more, in the conditioning chamber during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2, and for in an open condition allowing the pressure in the conditioning chamber to lower to atmospheric pressure or near atmospheric pressure, e.g. 1,1 bar, prior to the single serve carbonized water volume flowing out of the conditioning chamber; and wherein the carbonized water dispensing device is configured to, upon receiving the beverage dispensing order, provide the empty carbonized water conditioning chamber with a single serve volume of carbonized water, and hold the single serve of carbonized water prior to dispensing the single serve volume of carbonized water. - a carbonized water dispensing outlet, for dispensing a single serve carbonized water volume into a beverage container; - a cold water source; - a CO2 source; - a water line, which preferably is a chilled water line, the water line extending between the cold water source and a dispensing outlet; - a water carbonation system comprising a carbonator, preferably an in-line carbonator provided in the water line, for adding CO2 from the CO2 source to the water flowing through the water line from the cold water source to the carbonized water dispensing outlet, the CO2 preferably being added at a water pressure in the range of 5-9 bar; - a user interface comprising a control device configured to receive a beverage dispensing order, and subsequently actuate the carbonized water dispensing device to dispense a single serve volume of carbonized water; - a carbonized water conditioning chamber, which conditioning chamber is provided downstream of the carbonator and upstream of the carbonized water dispensing outlet, for receiving a mixture of carbonized water mixed with unresolved CO2, which conditioning chamber is dimensioned to hold a single serve of carbonized water with a headspace, and which carbonized water conditioning chamber is provided with: - an outlet valve for in a closed condition enabling the carbonized water conditioning chamber to hold the single serve volume of carbonized water, and for in an open condition allowing the single serve volume of carbonized water to flow out of the carbonized water conditioning chamber and subsequently out of the carbonized water dispensing outlet into a beverage container; - a gas outlet for in a closed condition preventing unresolved CO2 from escaping the conditioning chamber and thus enabling a pressure increase, preferably a pressure increase of up to 0,25 - 4 bar or more, in the conditioning chamber during the inflow of the mixture of the single serve volume of carbonized water and the unresolved CO2, and for in an open condition allowing the pressure in the conditioning chamber to lower to atmospheric pressure or near atmospheric pressure, e.g. 1,1 bar, prior to the single serve carbonized water volume flowing out of the conditioning chamber; and