SINGLETON Of Glen Ord 12 Year Old Sherry Cask. The triple cask maturation process begins with maturing whisky respectively in a fusion of European oak Sherry casks and American oak Bourbon casks. The Bourbon cask brings vanilla, caramel and woody notes and the Sherry cask adds fruity, bitter characters. After 12 years, these two whiskies are then brought together and married by Malt Master, Maureen Robinson TASTING NOTES:. Color: Light copper. Aroma: Rich fruity tasting notes with transcendental depth of taste and complexity that makes for a deep in nose flavours of plum and caramel. Palate: Rich palate of dark berries, cherries and blackcurrants. Finish: A dark chocolate finish.