Located on Islay's north-east coast and founded in 1846, Caol Ila has long been a supplier of major blends such as Johnnie Walker. For much of its history, its output remained largely behind the scenes, mostly used for blending rather than single malt releases. In recent decades, however, a substantial increase in official bottlings and independent cask releases has exposed more drinkers to its unique style, making it a favorite among many aficionados.