The John Collins is a timeless cocktail closely related to the Gin Fizz, but served as a highball. It combines gin, lemon juice, syrup and soda water, resulting in a light, refreshing and bubbly drink. The drink's name is believed to come from a bartender at Limmer's Hotel in London in the 19th century. The John Collins is a perfect drink for hot summer days and a great introduction to the highball category.