Disaronno (the famous Italian amaretto brand) claims the drink was a favorite of actor Marlon Brando, who played the titular godfather Vito Corleone, but there's no proof this is actually true.

Often seen on cocktail menus as ‘Amaretto Sour’ the Disaronno Sour is now seen as a classic cocktail along with the Espresso ...

Equal parts fruity, nutty, and sweet, amaretto is a signature Italian liqueur you and your bar cabinet must know about.