The invention relates to a carbonized water dispensing device (1) provided with a carbonized water conditioning chamber (2), which conditioning chamber (2) is provided downstream of the carbonator (7) and upstream of the carbonized water dispensing outlet (5), for receiving a mixture of carbonized water mixed with unresolved CO2, which conditioning chamber (2) is dimensioned to hold a single serve of carbonized water with a headspace, and which carbonized water conditioning chamber (2) is provided with an outlet valve (17) and a gas outlet (18). According to the invention, the carbonized water dispensing device (1) is configured to, upon receiving a beverage dispensing order, provide the empty carbonized water conditioning chamber (2) 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.