According to the distillery blurb:
This whisky is now between 13 and 21 years old. We blended it (50:50) with another ‘special’ whisky we had been quietly maturing. This new spirit was then placed into small quarter casks, enjoying a very intense maturation for seven years. Both whiskies were fine expressions of Laphroaig® in their own right, but when blended together something exceptional emerged as befits this 18th anniversary.
It is 51.2%ABV strength and non-chill filtered, and as I’m sure you can imagine, tastes just wonderful. Here are the notes:
With a nose that constantly evolves and is full of flavour, Cáirdeas Origin begins with a quick hint of concentrated orange moving quickly into huge peat flavours, ashy, dusty with hazelnut. It becomes crisp and fresh with cold green apples, grapes and finishing with a fresh cut grassy flavour.
The flavours evolve slowly on the palate and with great body it begins with white pepper moving into an earthy peaty flavour, some slight salt then purple heather. Huge creamy apricots that last and last, and it ends with some charred damp wood.
Here is one independent review.