Substituting ginger flavored syrup would make this a "three-gin" cocktail.
1 half of a lime, cut into three wedges
1 oz. simple syrup
4-6 mint leaves
1 can ginger ale (I go Diet to reduce sugar)
1 shot gin
In the bottom of a tall glass, muddle 4 mint leaves, syrup and lime together either with the back of a spoon or a proper muddler. Add ice. Pour gin over ice, top with ginger ale, and garnish with mint leaves, if desired.