Pour bourbon (or vodka), lemon juice, ginger syrup, and simple syrup into a shaker.
Add a handful of ice and shake hard for about 15 seconds.
Strain into a chilled cocktail glass.
Top with a lemon wheel or a twist of peel.
Notes
Adjust sweetness or ginger intensity to your taste by tweaking syrup ratios. Chilled glass enhances the experience. Vodka yields a lighter drink, while bourbon adds depth.