John Collins (cocktail)

John Collins
IBA official cocktail
Type	Mixed drink
Base spirit	Gin;
Served	On the rocks: poured over ice
Standard garnish	Lemon slice and maraschino cherry
Standard drinkware	Collins glass
IBA specified; ingredients†	45 ml gin; 30 ml fresh lemon juice; 15 ml simple syrup; 60 ml soda water;
Preparation	Pour all ingredients directly into a Collins glass filled with ice. Stir gently.
Notes	Use "Old Tom" Gin for Tom Collins.
	† John Collins recipe at International Bartenders Association

A John Collins is a long drink of London dry gin, lemon juice, sugar and carbonated water, which was attested in 1869, but may be older. It is believed to have originated with a headwaiter of that name who worked at Limmer's Old House in Conduit Street in Mayfair, which was a popular London hotel and coffee house around 1790–1817. It is essentially a variant of Tom Collins, evidently a latter name for the same drink.