It comes from the upper-left side of our flavour map. In an explosive manner! 
 
The Laphroaig distillery was founded in 1815 by Donald and Alexander Johnston and is located in Port Ellen, Isle of Islay. Although Laphroaig isn't allowed to put the prefix ‘Royal’ in its name (yet), rumour has it that his royal princeness Charles of Wales is a fan of the ‘L’ Whisky. The 15-year-old is reportedly the prince's favorite Scotch.
 
The craftsmen at Laphroaig have revived the practice and gave small casks another try. And boy did it work. 
 
Quarter Cask is a small type of cask (50 litres) used to transport Whisky on horseback during 19th century. They speed up the maturation process due to the larger wood contact.  Although there’s no age statement on this Laphroaig, it is said to be around six years old (of which 7 months in the quarter cask). Instead of chill filtering, only barrier filtering is used. 
 
Trivia:
Donald Johnston died in 1847. It is believed that he died having fallen into a vat of partially made Whisky.