Shake with ice and strain into a cocktail coupe.
While working at Drink in Boston one night, I had made a guest or two Phil Ward's Lipspin. Later, another guest requested a mezcal drink with bitter notes but with citrus, and I decided to convert the Lipspin into a Sour especially after recalling a comment on Kindred Cocktails where someone thought the drink could use some acid. Therefore, I reduced the two liqueurs from 3/4 to 1/2 oz, and since the Lipspin is pretty well balanced as a stirred drink, I countered the lime juice with simple syrup. When I got home, I tried out the recipe for myself and dubbed this Lipspin riff after the Echo & the Bunnymen song Lips Like Sugar.