This variation will have a citrusy, sweet, and slightly spicy flavour profile with warm notes.
In a cocktail shaker, add the gin, orange juice, simple syrup, and ground cinnamon.
Fill the shaker with ice and shake well to chill and combine the ingredients.
Strain the mixture into a highball or Collins glass filled with ice.
Top off the glass with soda water, and gently stir to mix.
Garnish with an orange wheel or twist and a cinnamon stick (if using).