Steep 1 tablespoon dried hibiscus flowers in 1 cup hot water for 5 minutes, until deep red, then strain and let cool completely in the fridge for about 30 minutes.
Fill a collins glass with ice cubes.
Pour in the chilled hibiscus tea, lime juice and simple syrup.
Stir for 10 seconds to combine.
Top with the club soda.
Garnish with a lime wheel and a dried hibiscus flower dropped into the glass.
Good to Know
Brew a full pot of hibiscus tea ahead and keep it in the fridge for up to three days, so party day is just pouring.