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A drinking vessel 38 in which a beverage, for example a draught beer, is to be served is cooled by formation thereon of ice formed of frozen potable liquid for example a small volume of the same beer. The potable liquid can be sprayed at 40 onto the inside 42 of the vessel 38 and/or onto the outside

A drinking vessel 38 in which a beverage, for example a draught beer, is to be served is cooled by formation thereon of ice formed of frozen potable liquid for example a small volume of the same beer. The potable liquid can be sprayed at 40 onto the inside 42 of the vessel 38 and/or onto the outside 44 of the vessel, and the liquid is then frozen on the vessel wall by the effect of a cooling coil 28 surrounding the vessel which can be rotated by a rotatably driven platform 30. The cooled vessel 38 will in turn cool beverage dispensed into it for drinking.

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1. A method of preparing a drinking vessel to receive a beverage comprising providing a drinking vessel, introducing a potable liquid into the vessel, and cooling the potable liquid so that it freezes onto the vessel wherein the vessel is rotated whilst the potable liquid is freezing and wherein the

1. A method of preparing a drinking vessel to receive a beverage comprising providing a drinking vessel, introducing a potable liquid into the vessel, and cooling the potable liquid so that it freezes onto the vessel wherein the vessel is rotated whilst the potable liquid is freezing and wherein the vessel has an axis which is arranged to be vertical if the vessel is upright, and the vessel is inclined so that the axis is non-vertical whilst the potable liquid is freezing and wherein the vessel has a side and the liquid is poured against the side of the vessel so that it runs down the side of the vessel and freezes against it.2. A method of preparing a drinking vessel to receive a beverage comprising providing a drinking vessel, introducing a potable liquid into the vessel, and cooling the potable liquid so that it freezes onto the vessel wherein the vessel is inverted and the potable liquid is sprayed into the vessel.3. Apparatus for preparing a vessel to receive a beverage comprising a supply arranged to supply a volume of potable liquid into a drinking vessel, and cooling means arranged to cool the potable liquid so that it freezes onto the vessel, said apparatus for use with a vessel having a side, wherein the cooling means is arranged to cool potable liquid which is in contact with side so that the potable liquid freezes onto the side and including rotating means arranged to rotate the vessel whilst the potable liquid is freezing for use with a vessel having an axis which is arranged to be vertical if the vessel is upright, the apparatus being arranged to support the vessel such that it is inclined so that the axis is non-vertical whilst the potable liquid is freezing and additionally for use with a vessel having a side, the apparatus including a nozzle arranged to dispense the potable liquid against the side of the vessel as the vessel is rotated.4. Apparatus for preparing a vessel to receive a beverage comprising a supply arranged to supply a volume of potable liquid into a drinking vessel, and cooling means arranged to cool the potable liquid so that it freezes onto the vessel and wherein the supply includes a nozzle for directing the potable liquid into the vessel and wherein said nozzle is arranged to direct potable liquid into the vessel as a spray which is arranged to support the vessel in an inverted position while the potable liquid is sprayed into the vessel.5. A beverage dispense apparatus for dispensing a beverage, the apparatus comprising a potable liquid introducing means arranged to introduce potable liquid to a vessel, a heat extraction means arranged to freeze the potable liquid to form ice on the surface of the vessel and a beverage dispense means arranged to dispense beverage into the vessel, in which said potable liquid to be frozen is directed at the vessel by nozzle means.6. Apparatus as claimed in claim 5, in which the potable liquid is directed as a spray.7. A beverage dispense apparatus for dispensing a beverage, the apparatus comprising a potable liquid introducing means arranged to introduce potable liquid to a vessel, a heat extraction means arranged to freeze the potable liquid to form ice on the surface of the vessel and a beverage dispense means arranged to dispense beverage into the vessel, in which the vessel is inverted and the potable liquid, to be frozen, is sprayed onto and/or into the vessel.8. A method of preparing a drinking vessel to receive an alcoholic beverage comprising providing the drinking vessel, introducing a volume of the alcoholic beverage into the vessel, and cooling the volume of alcoholic beverage so that it freezes onto the vessel, wherein the volume of alcoholic beverage is directed into the vessel by means of a nozzle.9. A method according to claim 8, wherein the volume of alcoholic beverage is directed into the vessel as a spray.10. A method of preparing a drinking vessel to receive an alcoholic beverage comprising providing the drinking vessel, introducing a volume of the alcoholic beverage into the vessel, and cooling the volume of alcoholic beverage so that it freezes onto the vessel, wherein the vessel is inverted and the volume of alcoholic beverage is sprayed into the vessel.