Rusty Nail cocktails used to be all the buzz. Here's how to turn your plain scotch into one if you want to get real vintage ...

Frank Sinatra is a legend known for his smooth crooner voice, as well as his acting chops. While his music is immediately recognizable, Old Blue Eyes also had a great love of whiskey and cocktails.

A simple cocktail that combines Scotch and Drambuie liqueur, the Rusty Nail was one of Frank Sinatra's favorite drinks.

Whisky liqueurs are available through drinks specialists and online. Whisky liqueurs can be drunk over ice or neat as digestifs and are often used in cocktails – the Rusty Nail is the best known.