Chill filtering

Chill filtering is a method in whisky making for removing residue. In chill filtering, whisky is cooled to between 5–10 °C (41–50 °F) and passed through a fine adsorption filter. This is done mostly for cosmetic reasons — to remove cloudiness — however by many whisky drinkers it is thought to impair the taste by removing the details which differentiate between the many distilleries.