Crystal Rock Candy

(from Lucianolinda’s recipe box)

Also makes a nice science project for kids

Source: Archives

Categories: Candy


  • 2 cups water
  • 4 cups sugar
  • 1/2 to 1 tsp. flavor oil (optional)
  • food coloring (optional)
  • wide mouthed large glass jar
  • skewers or thread


  1. Wash glass jar thoroughly with hot water. Prepare wooden skewers to hang about 1 inch from bottom of jar. Wet the skewers and roll them in sugar, to give a base for growing sugar crystals. Set aside to dry.
  2. Put the water in a medium pan and bring to a boil. Begin adding sugar, one cup at a time, stirring after each addition. Continue to stir and boil until all sugar is dissolved.
  3. Remove pan from heat. If using colors or flavors, add them at this time, stirring to blend. Let syrup cool about 10 minutes, then pour into jar. Lower sugared skewers until about 1 inch from bottom.
  4. Carefully place jar in a cool place away from harsh lights, where it can stand undisturbed. Cover jar with loosely with plastic wrap or paper towel. Sugar crystals should start to form with in 2-4 hours. If there is no change after 24 hours, try boiling sugar syrup again and dissolve another cup of sugar into it, then allow to cool 10 minutes and pour back into jar; inserting skewers again.
  5. Check back a couple of times each day until
  6. rock candy is desired size. Don’t let it grow too big and stick to the sides of the jar. Remove it and allow it to dry a few minutes before eating, or wrapping in plastic wrap.

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