Rock sugar Sydney is also better in drinks, much better than carbonated drinks. It's also very simple to make it yourself. Take a pear, remove the core, cut into pieces and rock sugar, put water in a bowl and steam it for 30 minutes. You can add some other materials, such as Fritillaria, Tremella, honey, etc., and choose it according to your needs. Of course, if it's too much trouble, you can just cook it.