This is the fourth release of this very limited edition single malt. Distilled at Mars Whisky’s Shinshu Distillery in Nagano Prefecture in 2015 and then aged on the small island of Yakushima, a UNESCO World Heritage site and rainforest off the coast of Kyushu in the South of Japan. The majority of this whisky was matured in bourbon and sherry barrels for 3 to 5 years.