To make agua fresca de jamaica, soak a handful of dried hibiscus flowers in a small pot of just boiled water. Let soak for a half-hour or so, then have your kids strain the tea into a pitcher and add cold water and ice. Throw in a few berries for decoration and you’re done! If you want to sweeten it just a bit, add a simple syrup (½ cup granulated cane sugar to one cup water) to taste. Enjoy!