A container and method for forming a palatable carbonated ice under pressure, includes a container having an outer wall with a lower end enclosed by a bottom wall and an upper end enclosed by a top wall to form an internal chamber. A water based fluid having sugar, such as a diet sweetener, and CO2 is located within the internal chamber. A portion of headspace between the water based fluid and the top wall sized to permit expansion of the water based fluid during freezing without rupturing the container. The container having a rupture strength greater than a conventional pop can of about 105 pounds per square inch. The top wall includes a removable portion that provides an opening to the internal chamber to facilitate the removal of palatable ice from the internal chamber, where the removable portion covers at least a majority of the surface of the top wall.