• Sarah Dann

Edible Crystals

Hello all you lovelies! Quick note before I start this... Can you believe that in the three months I have had this blog, there has been over 10,500 people view my posts?! Thank you to all for taking the time to read my work.

For me though this is not about numbers, this is about helping all you wonderful mummies, daddies and everyone in between with fun activities that you can do with your little ones and build memories.

I truly hope you are all enjoying this as much as I am!

Now lets 'rock' on with our own rock candy!

I will start off with that this is not a quick activity. Please don't let this deter you, as it is super neat, but I want to be honest with you and so you are aware it can take several days depending on how big you want your homemade rock candy to be. However, you will start seeing the crystals form on your stick after three days.

If you don't, simply re-boil your sugar solution and place into a clean jar and insert your skewer in again.

This will make 2 rock candy's.

What you will need:

  • White Sugar - I did try this with brown sugar and was unsuccessful.

  • Food coloring and flavoring is optional.

  • Water

  • Saucepan

  • Wooden Spoon

  • 2 Clean Jars

  • Pegs (clothes or bag pegs)

  • 2 Wooden skewers

  • Coffee filter - To place on top to prevent anything such as little critters falling into the jar.

  • Plate


  • Boil 2 cups of water in a saucepan.

  • Slowly pour in 4 cups of sugar, gently stirring as you do so until all the sugar is dissolved.

  • Turn off the heat & leave to cool.

  • Take a plate and pour a small amount of sugar onto it.

  • Dip your skewers into your sugar solution and then roll in the sugar.

*Note make sure you coat the end of your skewer which isn't pointy, so when your child eats their candy they aren't putting something sharp into their mouths.

By coating the skewer first will help the crystals to grow where you want them to.

  • Now add your food coloring and flavoring to your saucepan of sugar solution. Use up to 1 teaspoon of flavoring and 2-4 drops of food coloring.

* This is where you can get creative. Try playing with your senses and using alternative colors and flavors, such as mint flavoring with pink food coloring.

  • Once the sugar mixture is cool, pour the solution into your jar.

  • Attach peg to either side of your wooden skewer to balance it on the top of the jar. You want the bottom of your skewer to be about an inch from the bottom.

  • Place a coffee filter on top and leave in a place where it won't be disturbed.

If there is any crystals forming on the top of the jar, these can easily be broken to enable you to pull your skewer out.

How does this work?

This works 2 ways: supersaturation to precipitation & evaporation:

When you heat a liquid, such as water, it allows the liquid to be able to hold more molecules such as sugar then if it was cold. This results in a supersaturated solution. As the water cools, it is no longer able to hold onto so many molecules of sugar. Therefore the sugar is turned back into crystals which is called precipitation.

In addition to this over time, the water will begin to evaporate, leaving the solution to become more and more concentrated and the molecules will form together back into crystals making your rock candy.

Your result, a super tasty treat that you can really see grow!

Happy Growing!

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