The Gin Basil Smash is a gin sour smashed through with fresh basil until it turns vivid green and smells like a herb garden. It was created by Jörg Meyer at Le Lion – Bar de Paris in Hamburg in 2008 — first under the name "Gin Pesto" — and was one of the earliest cocktails to spread worldwide through the cocktail blogs of the late 2000s. It is now a fixture of summer menus everywhere, and one of the few modern classics whose creation can be dated almost to the week.
One of the rare cocktails you can date precisely, watch go viral, and still actually want to drink.
History
Jörg Meyer built the Gin Basil Smash at his Hamburg bar, Le Lion, in 2008. He initially called it the "Gin Pesto," a name that stuck around as a nickname even after the smash label won out. Crucially, Meyer documented and shared the drink online early — and it propagated through the emerging cocktail-blog network faster than almost any drink before it, becoming a genuinely global recipe within a few years.
The "smash" half of the name is a nod to an older family of drinks — spirit, sugar, citrus, and a muddled or shaken herb or fruit — that goes back to the 19th century. The Gin Basil Smash is the modern poster child for the form, and the reason basil now turns up behind so many bars in summer.
The Spec
It is a gin sour with a generous handful of basil shaken in. Equal-ish lemon and sugar around a healthy pour of gin, with the basil providing the aroma and the color.
Smash the basil — within reason
The goal is bright green and aromatic, not bitter. Many bartenders skip the muddler entirely and simply add a fistful of whole basil leaves to the shaker and shake hard with ice — the ice does the smashing. If you do muddle, do it gently; grinding basil to a paste pulls out bitter, vegetal notes.
Double-strain
Fine-strain into a rocks glass over fresh ice. A few green flecks are part of the look, but you want to leave the shredded leaf and any stem behind. A clean, jewel-green drink with a basil sprig on top is the target.
Gin choice
A juniper-forward London Dry gives the basil something to play against. Softer, more floral contemporary gins work too, but the drink is best when the gin and the herb are clearly in conversation rather than blurring together.
Bottom Line
The Gin Basil Smash is summer in a rocks glass — herbal, tart, and refreshing, with an origin you can actually point to. Use plenty of fresh basil, don't over-muddle, and double-strain.