Grab some leftover cranberry sauce and--avoiding the whole berries--add 2 tablespoons to a shaker with the gin, lime juice and bitters. Add ice, shake very vigorously at least 30 to 45 seconds and strain through a mesh strainer into a chilled coupe glass. Smack a sprig of rosemary between palms to release aroma/holiday aggression and float delicately atop the cocktail. Toast to well-purposed leftovers.
Recipe courtesy of Alie Ward and Georgia Hardstark