In a cocktail shaker filled with ice, combine whiskey, lemon juice and simple syrup.
Shake well and strain into a Collins glass filled with ice.
Top up the drink with club soda.
Garnish with an orange slice and a cocktail cherry.
Notes
Use fresh lemon juice for the best flavor. The concentrate can be more tart than regular lemon juice.Try it with different kinds of whiskey or other spirits to experience all the versions of this cocktail.
Colonel Collins: Use bourbon whiskey.
Captain Collins: Use Canadian whisky.
Jock Collins/Sandy Collins: Use Scotch whisky.
Michael Collins/Mike Collins: Use Irish whiskey.
Non-alcoholic John Collins: Use a zero-proof whiskey.
Tom Collins: Use gin.
Joe Collins/Vodka Collins: Use vodka.
Pedro Collins: Use light white rum for the base spirit.
Pierre Collins: Use Brandy or cognac is the star of a Brandy Collins.