Produced in partnership with the Highland Park distillery, the limited edition Ola Dubh 30 was aged in casks formerly used to mature Highland Park 30 year old single malt whisky.
The anniversary beer is said to be based on Harviestoun’s Old Engine Oil beer with “more than a stylistic nod to the classic Imperial porters and touts of the 19th century”.
Harviestoun’s permanent range includes Ola Dubh 12, 16 and 18.
Chris Miller, managing director at Harviestoun, said Ola Dubh “continues to excite enthusiasts the world over”.
Ola Dubh 30 is available from the Harviestoun website and in selected specialist retailers priced at £10 per 330ml bottle.
Eighty percent of Ola Dubh 30 bottles will head to export markets.