This popular cocktail is often served topped with cola, when it becomes a Colorado Bulldog.
Origin
Thought to have been created circa 1949 by Gustav Tops, a hotel bartender in Brussels. Set against the start of the Cold War, the drink is said to have been inspired by Perle Skirvin Mesta, the U.S. ambassador to Luxembourg (1949-1953) and rich American socialite who the term 'hostess with the mostess' was coined for due to her lavish parties.
As well as this cocktail, Perle was the inspiration for Irving Berlin's musical Call Me Madam and several books, including her own 1960 autobiography, Perle: My Story.