Fractional freezing is a process used in process engineering and chemistry to separate substances with different melting points. It can be done by partial melting of a solid, for example in zone refin
Bock
…Doppelbock (Double Bock), a stronger and maltier version Eisbock (Ice Bock), a much stronger version made by partially freezing the beer and removing the ice that forms Weizenbock (Wheat Bock), a wheat beer made from 40 to 60% wheat…
Fractional freezing of grapes to concentrate grape sugar for making ice wine