Use Brad Thomas Parsons's tangy syrup in the Red Carpet Reviver recipe from his "Bitters" book.
Bring all ingredients to a boil in a medium saucepan over medium-high heat, stirring occasionally to dissolve sugar. As soon as mixture begins to boil, immediately remove from heat; let cool completely. Strain syrup into an airtight container.
Syrup can be kept covered and refrigerated for up to 1 month.