King's Ginger
The King's Ginger is an English liqueur by Berry Bros. & Rudd. The liqueur was originally created for King Edward VII. After his death in 1910, it was commissioned exclusively for the royal family. In 2011, it was standardized and made available to the public in select countries. The King's Ginger was created in 1903 when King Edward VII's doctor commissioned Berry Bros. & Rudd to create a "fortifying beverage" to be served in King Edward's flask. King Edward's doctor was concerned about the King's constitution: the King was obese, suffered from various ailments, elderly and tended to travel the countryside in his convertible and go hunting regardless of the weather conditions. The doctor hoped this beverage would help "stimulate and revivify His Majesty during morning rides."
Source: Wikipedia