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Mason jar filled with 5 different colors of rock candy on sticks

DIY Rock Candy

Homemade rock candy is easy to make! It simply requires a little bit of patience and a whole lot of sugar. Whether you're making the sweet treat to enjoy for dessert or as a science experiment to do with your kids, you'll be amazed at how fun DIY rock candy is.
4.94 from 46 votes
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Course: Dessert
Cuisine: American
Keyword: Candy Desserts, Food Science, Homemade Candy
Prep Time: 30 minutes
Crystalizing Time: 6 days
Makes: 5 sticks of candy
Author: Sues


  • 5 wooden skewers
  • 5 mason jars (I recommend 16 oz)
  • 5 clothespins or chip clips
  • 4 cups water
  • 10 cups granulated sugar, plus more for coating skewers
  • Food coloring


  • Submerge skewers in water, coat them in sugar, and then set out to dry. I like to do this a day ahead of time, but as long as you let them dry for an hour, they should be fine.
  • Make sure your jars are clean and not cold (run hot water through them if necessary). Attach a clothespin or chip clip to the top of each skewer and then balance over the top of jars. Be sure your skewer is hanging about an inch from the bottom of the jar as the rock candy crystals will stick to the bottom of the jar and will make it tough to remove skewers.
  • In a large saucepan, bring water to a boil. Add sugar in one cup at a time, stirring with a wooden spoon and letting each cup fully dissolve before adding the next. You'll notice it becomes harder and harder for the sugar to dissolve as you add more in.
  • Once your final cup of sugar has been dissolved, let mixture simmer for about 5 minutes before removing from heat. Let mixture rest off the heat for about 15 minutes.
  • Divide sugar solution amongst the 5 prepared jars. Stir in food coloring at this time. I recommend bringing your jars to where they'll be resting for the next 6-7 days at this time. Be sure to use caution as the jars will be very hot. Once they're in their resting spots, place prepared skewers into solution. You'll want to try your best not to move jars around much once skewers are in place.
  • You'll likely see little crystals forming within hours, but you'll want to let the jars rest for 6-7 days to let sugar crystals fully form.
  • When ready to remove rock candy sticks from jars, use your finger or a fork to gently crack the hardened sugar on top of the jar and gently wiggle the stick to release. Let solution drizzle from stick (I recommend setting the candy over an empty jar or bowl to let it drip) before enjoying the candy.


  • If you want to re-use the sugar solution to make more rock candy, pour solution into saucepan and bring to a boil (you can add any sugar crystals that have already formed, but if you can't get them all, simply clean them out of the jar before re-using). Add in an additional ¼ cup of sugar and let simmer for a couple minutes. Remove from heat and let cool for 10 minutes before pouring into a clean jar.

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