Wash your berries and pull off any stems. Save a few whole berries for garnish—they look great on top.
Muddle the rest of the berries in a cocktail shaker until they’re nice and juicy.
Pour in the hibiscus tea, honey syrup, watermelon juice, and lime juice.
If you’re adding rum, now’s the time.
Fill the shaker with ice and shake it up for about 15 or 20 seconds.
Strain into highball glasses filled with ice, about two-thirds of the way up.
Top with club soda and give it a gentle stir.
Add mint, those reserved berries, and a lime wheel for garnish.
Serve right away. This recipe makes about 4 servings, give or take.