Why Chill Filter Cognac?

Pernod Ricard has launched the first Martell non-chill filtered cognac. Chill filtering is a process routinely employed by the larger cognac houses. It is a means of clarifying the appearance of the drink as it forces the spirit and water to mix more quickly and effectively. (The effect of mixing spirit with water can be seen when water is added to whisky as it often becomes cloudy). Young, mass-produced cognacs need to be reduced with water quickly to prepare them for market so chill-filtering is a useful tool – although it is only effective on spirits with an abv of less than 46 degrees. The temperature of the cognac is reduced to between -10 and +4 degrees to assist reduction and a fine absorption filter is also used to take out very small particles. This filtration reduces haziness but also captures some of the esters and fatty acids which are produced during the production and ageing process. Most experts claim that this filtering affects the flavour since some of these esters and fatty acids form into congeners (flavouroids) which add flavour. We do not chill filter at Hermitage Cognacs as all our cognacs are reduced naturally or over a very long period of time.  Take our Hermitage 1917 for example – distilled 100 years ago.