特製釀製系列中最深、最濃烈的威士忌，格蘭傑波特酒在美國白橡木桶經過漫長的 10 年釀製，然後再換桶至特選自 Quintas 葡萄牙酒莊的紅寶石葡萄酒木桶。

The darkest and most intense whisky in the extra-matured range, Glenmorangie Quinta Ruban has spent 10 years maturing in American white oak casks, before being transferred into specially selected ruby port pipes from the Quintas or wine estates of Portugal.