Abstract: 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.

Abstract: A beverage, for example a draught beverage, which may already be cooled before introduction into a drinking vessel is introduced into the vessel into which additional cooled material is introduced. The cooled material may be frozen water which is used to dilute the beverage to a desired strength e.g. a desired alcoholic strength. Alternatively the cooled material may be frozen beverage.