You can learn how to make rock candy. The process is very simple. You only need water and sugar. You put the water to boil and then add a cup of sugar. You mix it up and then put it in the sink and poor it into a glass. Then a screw is inserted into the glass to get moisture into the solution. Take it out, leave it for 3 days, then after 3 days sink it again in the solution and then leave it to dry for 1 week.