How to Make rock candy

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.