Ice beer

Ice beer is a beer that has undergone some degree of freezing during production. These beers generally have a higher alcohol content, and lower price relative to it.

The process of "icing" beer involves lowering the temperature until ice crystals form. Since ethanol has a much lower freezing point (-114 °C; -173.2 °F) than water (0 °C; 32 °F), when the ice is removed the alcohol concentration of the beer increases. The process is known as fractional freezing or freeze distillation.