How did whisky become the world's favourite tipple? Elizabeth Hotson discovers the secrets behind the water of life.

Rachel McCormack, author of Chasing the Dram, tells us how the giants of scotch attained their legendary status, and we delve into the archives of one of the world's most famous whisky brands with Christine McCafferty of drinks leviathan Diageo.

Elizabeth also talks to distillers from across the globe, including Whistlepig from the US state of Vermont, Japan’s Chichibu distillery, Spirit of Hven in Sweden and Rampur from India. She also unlocks the secrets of Scotland's silent distilleries during a visit to Edradour, and samples the most popular whisky cocktail at one of the world's best bars. Lucky Elizabeth!

(Picture: Glenlivet barrels; Credit: BBC)