How to Make It
Rub rim of a martini glass with 1/2 teaspoon of the simple syrup. Place crushed candies in a shallow dish, and dip rim in candies.
Combine vodka, lemon juice, Grand Marnier, and remaining 2 tablespoons simple syrup in a cocktail shaker. Fill shaker with ice; cover and shake vigorously until outside of shaker is frosty, about 15 seconds. Strain into prepared glass. Float a thin slice of lemon in glass.