Add bourbon, cold peach tea, and ginger simple syrup to a cocktail shaker filled with ice.
Shake vigorously for 15-20 seconds until well chilled.
Strain the mixture into a highball glass filled with fresh ice.
Garnish with peach slices and optional mint leaves.
To make ginger simple syrup:
Peel and slice ginger root. Combine water and sugar in a small saucepan over medium heat.
Add sliced ginger and stir until sugar dissolves. Remove from heat and let steep for 30 minutes.
Strain the syrup and store in an airtight container in the refrigerator.
Notes
The ginger simple syrup stays fresh for up to 2 weeks when refrigerated.Cold-brew the peach tea overnight for the best flavor.Use high-quality bourbon for optimal taste.Double strain the cocktail if you want to remove small ice chips.The recipe makes one cocktail but can be scaled up for parties.Store leftover simple syrup in a glass jar with a tight lid.