Auchentoshan American Oak Single Malt is matured in only 100% first-fill bourbon casks sourced from American Distilleries.

Auchentoshan Three Wood Single Malt has been mellowed in three different cask types; American Bourbon then Spanish Oloroso Sherry, followed by Pedro Ximenez Sherry casks.

Auchentoshan 12 Year Old is a triple distilled Lowland single malt whisky that's been predominately aged in American bourbon barrels and a small amount of Spanish sherry casks.