The story goes that the drink stems from the Tom Collins Hoax of 1874, a practical joke which saw an individual tell another that someone named Tom Collins was speaking ill of them at a nearby bar, sending that person off to find 'Tom Collins'. An innovating bartender turned this name into a drink, to be served to those looking for the mysterious Tom Collins, and the name stuck - eventually becoming memorialised in print by the first ever cocktail book; Jerry Thomas' Bon Vivant's Companion.
50ml 1689 Dutch Dry Gin
25ml lemon juice
25ml sugar syrup
125ml chilled soda water
Shake you gin, lemon juice and sugar syrup in a cocktail shaker with ice. Strain into a Highball or Collins glass over ice and top with soda water. Garnish with a lemon twist.