In the glass, muddle the mint leaves gently with the simple syrup and lime juice to release the mint's essential oils.
Fill the glass halfway with crushed ice.
Pour in the white rum and blue curaçao over the ice.
Stir well to integrate the flavors and ensure the drink has that beautiful gradient effect seen in the image.
Top with more crushed ice to form a mound at the top.
Slowly pour the club soda to fill the glass, causing the blue curaçao to blend and create a gradient of color.
Garnish with a lavish amount of edible purple flowers on top, allowing them to spread out and create an eye-catching presentation.