something about bottle cylinder

An apparatus comprising: a container configured to house vodka; and a temperature regulating mechanism attached inside the container, wherein the temperature regulating mechanism comprises an elongated member with an approximate shape of a bottle cylinder and comprises phase change material, the phase change material configured to allow for micro encapsulation and for a customized melt/freeze point at which the phase change material changes phase, wherein the temperature regulating mechanism is configured to maintain the vodka at a predetermined temperature below room temperature at approximately 10 degrees Celsius and for approximately 1.5 hours throughout a forward phase change and a reverse phase change of the phase change material inside the container