Fill a tall glass with crushed ice. Pour Minted Simple Syrup into the glass. (For a sweeter cocktail, add more syrup.) Slightly crush mint sprigs, and add to glass. Pour bourbon into glass. Stir. Garnish with a mint sprig, if desired. Makes 1 serving.
Minted Simple Syrup
Pour boiling water over sugar in a small bowl; stir until sugar dissolves. Stir in mint leaves. Cover and chill for at least 4 hours. Strain mixture through sieve. Discard mint leaves. Store syrup, covered, in the refrigerator for up to 3 days. Makes about 3/4 cup.