To make syrup, combine all ingredients in a saucepan over medium heat and cook, stirring occasionally, until sugar dissolves.  Remove from heat and let stand to infuse for 1 hour. Strain into an airtight jar and refrigerate for up to three months.

To make cocktails, stir 1 oz each of bourbon and syrup together in a glass. Fill with ice and top up with iced tea. Add more syrup and/or bourbon to taste.