How to Make Rock Candy

By LeafTV Editor

How to Make Rock Candy. Making rock candy - which is actually just sugar crystals on a string - can be a remarkably enjoyable and edible science project, as well as a tasty treat. Follow these simple steps to have a batch ready in no time.

Make Rock Candy

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Step 1

Sterilize the glass jar and paper clip by boiling both in water for a few minutes.

Step 2

Tie a short piece of kitchen string to the middle of a pencil or Popsicle stick.

Step 3

Attach the paper clip to the end of string. (The clip will weigh the string down - this is important later.)

Step 4

Moisten string lightly and roll in sugar (this helps the crystals form on the string).

Step 5

Place the pencil or stick over top of a jar. Make sure clip is in the bottom of jar and the string hangs straight down into jar.

Step 6

Heat 1 cup water to boil.

Step 7

Dissolve 2 cups sugar in boiling water.

Step 8

Add a few drops food coloring if you like.

Step 9

Pour sugar syrup into jar and leave for 2 to 3 days or until crystals form on the string.