I loved these kinds of edible science experiments when I was a kid. My dad and I would set up rock candy jars and I’d wait patiently to see not much of anything happen. It was always a crapshoot.
In this method, creating a clear solution and “seeding” the sticks will help the crystals grow more quickly. I also added fun flavors that make these sticks delicious on their own, or added to a cup of coffee or tea.