The roaring Twenties was known for its speakeasies and great parties. F. Scott Fitzgerald's The Great Gatsby captures the glamour of this period, and goes into detail when it comes to describing the decadence.
Here's The Difford's Guide to the Gin Rickey -
"Only two cocktails have the distinction of being named in the book and this is one of them, appearing on a hot summer's day when Daisy, Gatsby's love interest, orders her husband Tom to "make us a cold drink". Returning, Tom carries "four gin Rickeys that clicked full of ice. Gatsby took up his drink. 'They certainly look cool,' he said with visible tension. We drank in long, greedy swallows".
Clean, sharp and refreshing. A Rickey (gin, lime juice, sugar and soda), is thought to be named after Colonel Joe Rickey who had a love for squeezing lime into his whisky before topping his drink with soda. The gin version became a Prohibition staple and is claimed to have been the favourite drink of Fitzgerald himself. "
2 shot Brandy, whisk(e)y, gin, rum etc.
½ shot Freshly squeezed lime juice
¼ shot Sugar syrup (1 water : 2 sugar)
Top up with Soda (club soda)
SHAKE first three ingredients with ice and strain into ice-filled glass. TOP with soda.