Each new season is a perfect excuse to brush up on your mixology and elevate your cocktail hour into something less beery and more James Bondian. Or in this case, Jay Gatsby-esque.

Light and refreshing, energized by citrus and the subtle snap of gin, the gin rickey is a truly classic cocktail. Invented in the 1890s and name-checked in The Great Gatsby, it’s a deceptively simple drink that’s perfect for any summer happy hour. Here’s the best way to make it.

You’ll need:
Cocktail shaker
Crushed ice
4 oz. Bombay Sapphire gin
1/4 oz. lime juice
1/4 oz. lemon juice
Lime wedge

Fill the cocktail shaker halfway with ice. (Only fill it halfway—otherwise the other ingredients won’t fit.) Add the gin, then lime juice and lemon juice. Shake for fifteen to twenty seconds. Pour into highball or rocks glasses. Garnish with a lime wedge and enjoy. You don’t have to do this in Gatsby’s summer whites, but it wouldn’t hurt.