The Macallan works closely with fully integrated ‘tree to finished seasoned cask’ companies in Spain; to identify the oak trees in the forests of northern Spain, fell the trees, saw and air dry the oak staves before shipping them to the south for further air-drying to reduce the moisture even more. The casks are then seasoned for 18 months before making the journey to Scotland where they are filled with The Macallan ‘new make’ spirit.