A keg body for retaining draft beer substantially has adiabatic structure, in which draft beer filled in the keg body is kept cool. A part of the keg body is provided with a face which is not heat-insulated and this face is utilized as a cooling face. In case of necessity, beer is cooled from the outside through the cooling face to keep cool draft beer inside the keg body.
A keg for a liquid to facilitate cooling of the liquid retained in the keg and to keep the temperature of the cooled liquid in the keg, comprising: a keg body for retaining the liquid therein and having an upper face, a lower face, a side face and a mouth piece attached to one of the upper and lower faces, said mouth piece providing the liquid into the keg body and ejecting the liquid therefrom, said keg body being formed of a keg inner cylinder for constituting a container for the liquid and a keg outer cylinder for substantially covering the keg inner ...
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