Muddle mint leaves with simple syrup in a cocktail shaker.
Add pineapple juice and lime juice to the shaker.
Fill shaker with ice and shake for 15-20 seconds.
Strain mixture into a tall glass filled with fresh ice.
Top with club soda and stir gently.
Garnish with a pineapple wedge and mint sprig.
Notes
The mocktail tastes best with fresh pineapple juice rather than canned versions.Store simple syrup in the fridge for up to 2 weeks.Make ahead tip: Mix pineapple juice, lime juice, and simple syrup up to 24 hours before serving. Add mint and club soda just before serving.For a sweeter drink, add an extra tablespoon of simple syrup.Children love this drink served in fun glasses with colorful straws.