Like an hommage to the old town of Perth and the whisky brand, Morrison & Mackay made this blended malt; a mix of different single malt whiskies, unlike blended whiskies where, besides single malt, also grain whisky is mixed. The Old Perth brand is already very old and dates from the beginning of the 20th century, but disappeared in the seventies. The new Old Perth is a mix of different distilleries from the Scottish Highlands. The main ingredient is the whisky from the Aultmore distillery.
