Glenfiddich, the award-winning single malt Scotch whisky, announced the launch of Grande Couronne, the newest addition to its opulent Grand Series. Grande Couronne is a 26 year old whisky, matured in American and European oak casks at the Glenfiddich Distillery in Dufftown, Scotland, before the crowning glory – an extended finish of up to two years in meticulously sourced French Cognac casks.