This clever drink by bartender Colin Shearn from Jason Wilson’s excellent book Boozehound is worth making just so you can tell people you’re serving them with a Restraining Order. Ha! Shearn calls for Aperol, but Campari would add a nice bitter note if that’s your thing.
The orange peel is a critical part of the drink’s flavor profile, so we’ve included it in the ingredients list here (unlike most garnishes, which we generally consider optional).
Stir the first three ingredients with ice, and strain into an ice-filled short glass. Twist the orange peel over the drink, and tuck it into the side of the glass.