The Gin Sling recipe dates back to at least the late nineteenth century. This dusted-off version comes from Dale DeGroff’s seminal tome, The Craft of the Cocktail.
DeGroff has a sweet tooth, and we often find that we need to reduce the sweetness in his recipes a bit to appeal to post-millennium tastebuds. We figured we’d have to do that here, with such a large serving of simple syrup. We were pleasantly surprised to find it was quite tasty as written; the sparkling water helps to keep the sweetness in check.