Add in the four cups of sugar, and stir it in to the boiling water, until it dissolves. Then, proceed to take the pot off the heat, and pour this sugar mixture into the glass jar. Make sure the glass jar is completely clean.
Procure a cotton string, and tie one end around the middle of a pencil. Then, tie a clean washer or screw to the other end. Make sure the string is only long enough to dandle around 2/3 of the way into the glass jar.
Dip the string in to the sugar solution (screw end first), and soak it in the mixture for a while. Then, take it back out, and lay it out straight on to a piece of waxed paper.
Allow the soaked string to dry for around two days. Meanwhile, cover the glass jar containing the sugar solution with more waxed paper, and keep it aside as the string dries.
Finally, hang the string in the sugar solution by laying the pencil across the rim of the jar, so the string dangles down into the sugar solution. Place the jar in a safe place where it cannot be knocked over, and after 7 days, your sugar crystals on a string will be ready.
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