Combine the bourbon, lemon juice and simple syrup in a shaker.
Add ice and shake for 8 seconds — just enough to chill and combine.
Strain into a highball glass filled with fresh ice.
Top with cold ginger ale and stir once.
Garnish with a lemon wedge.
A pre-Prohibition American highball named for the transatlantic telegram. It is the missing link between the Whiskey Sour and the modern whiskey-ginger, and the short shake before the ginger goes in is what makes it taste like neither.
My Bar Shelf reads your shelf and shows you every cocktail you can make from what you already own, including Cablegram.