A system and a method for the production and provision of CO2 gas is disclosed. A sealable chamber is equipped with heating means and when sodium bicarbonate is placed in it and heated to its decomposition temperature CO2 gas is released. The released gas is conveyed into liquid within a container and when the pressure of the gas in the container raises more and more CO2 gas is dissolved. The heating may be done by conduction mechanism or by induction mechanism. The sodium bicarbonate or any other material including carbon dioxide may be disposed in powder or solid form. I may be disposed in thin envelope case.