homemade rock candy with green plants behind it.
Snacks

Homemade Rock Candy

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Homemade Rock Candy is awesome! It really is food science working at its finest. Not only is it a fun experiment to do but the end result is so tasty.

Using just a few ingredients you can make rock candy at home. It would make a great activity to do with the kids as well. Maybe someone needs to conduct a science experiment for school? This would work perfectly for that. It is easy to do, if I can do it, you can do it. Let’s get started!

Step 1: Gather the ingredients and tools

tools and ingredients for making rock candy, sugar, wooden sticks, water, jars.

Homemade rock candy only requires a few ingredients. You will need:

  • Water – I generally use filtered water, since my tap water tastes gross.
  • White granulated sugar – The sugar is the star of the dish. You can’t make rock candy without the sugar.
  • Food coloring – This is an optional ingredient. It is great for making all kinds of different colors.
  • Flavoring – There are a variety of flavorings that you can put in your rocky candy.

Tools

  • Pot
  • Wooden spoon or spatula
  • Lollipop sticks or bamboo skewers
  • Wide glasses or mason jars
  • Clothespins

Step 2: How to make homemade rock candy

white stick covered in sugar on a plate

To begin you need something for the rock candy crystals to form on. I generally use cake pop or lollipop sticks, strings are used frequently. I have also used bamboo skewers as well.

Dip the stick in water and then roll it in a plate that has some white granulated sugar on it. Little sugar crystals will stick to the stick. These are what are called “seed crystals.” The other crystals will attach themselves to these. Once the sticks are coated allow them to dry for 25 to 30 to minutes.

Step 3: Create the sugar solution

rock candy sugar solution in a pot on a stovetop

Time to make the sugar solution. Take a medium saucepot and add in the water. Place it on the stovetop and turn the heat to medium.

Once the water starts to simmer add in one of the cups of sugar. After that sugar dissolves add in another cup and repeat with the last cup of sugar. Stir the mixture and bring it to a boil.

Once it comes to a boil add in the food coloring and any flavoring that you may have. Mix it in and then turn off the heat. Allow the hot sugar solution to cool for 20 minutes. This is the base solution for rock candy.

Note: Please do not touch the liquid or the pot it is extremely hot and will burn you. Young children should have adult supervision when making rock candy at home.

Step 4: Containers for the Rock Candy to grow in

Next, you need some sort of container to put the solution in. The container shouldn’t be too narrow it needs to be wide enough to allow the crystals to form without sticking to the sides. I generally use a large mason jar for my rock candy (800 ml size). That, size jar will make one large rock candy. Or can can try it with smaller containers.

Use a funnel so it is easier to fill up the jar. Leave about an inch to an inch to two inches of space from the top. Add a circular ring to the top of the jar and then dip one of your sugar sticks in it and attach it with a clothespin.

Make sure there is an inch and a half of space between the bottom of the jar/container and the stick. If you want to make a few different colors and flavors, don’t add the food coloring and flavoring while the solution is heating. You can add it to the individual jars instead.

Now it is time to wait for those sugar crystals to develop. This will usually take 5 to 7 days for a good amount of crystals to form making that awesome rock candy.

Step 5: Homemade Rock Candy has formed!

Rock candy forming in a jar or red sugar solution

After a few days, you will be able to see the progress of rock candy. Notice the film of sugar that has grown on the very top surface of the sugar solution, this is normal. Time to remove the candy from the solution.

4 homemade rock candy two blue and two pink in glasses

Use a fork and gently break apart the thin layer of sugar crystals on the top. Pull the stick with the rock candy out of the solution and place it on another glass to dry.

This will allow any dripping sugar water to be contained. Let them dry for about 4 hours. The longer you allow them to sit in the water the larger the crystals will grow. Don’t they look awesome?

Rock Candy Troubleshooting Tips

It is possible that so many crystals will grow in the glass or cup and the stick will get stuck. This glass is a little too narrow of a glass. This is science but not always an exact science, meaning sometimes the sugar crystals just don’t grow how you want them to.

I have found an 800 ml size mason jar works great, it is about 3.5 inches wide and 6.5 inches tall. But it will only make one large candy with this recipe. The cool thing is the science still worked.

Sugar crystals did form, just too well, because the stick won’t come out. Sometimes you can run hot water on the bottom of the glass to release the stick.

Why are my rock candy crystals so small?

Was your glass or container cold by chance? When pouring the hot liquid into the container it may have cooled quicker causing the development of smaller crystals. One way to avoid this is the heat the jar up on the outside with hot water before adding the sugar solution. Or just a metal container like a wide thermos.

How long can I store the rock candy?

Rock candy, if stored in a dry place, can last for up to a whole year.

homemade rock candy with green plants behind it.
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4.73 from 33 votes

Homemade Rock Candy

Making rock candy at home is a fun science experiment that you can eat! You can experiment with different colors and flavors. It is a great activity to do with the kids. It is extremely easy to make using just a few ingredients. Remember though this is a science experiment more than it is an exact recipe. Sometimes you can do everything right and the crystals just don't behave, haha.
Prep Time10 mins
Cook Time15 mins
Resting time5 d
Total Time5 d 25 mins
Course: Candy
Cuisine: American
Keyword: crystals, fun, kids, science, sugar
Servings: 3 Candies
Calories: 194kcal
Author: Matt Taylor

Equipment

  • pot
  • wooden spoon or spatula
  • lollipop sticks or bamboo skewers
  • wide glasses or mason jars (400 to 800ml) or wide metal thermos
  • clothespins

Ingredients

  • 1 cup of water 240 ml
  • 3 cups of white granulated sugar 600 g
  • 1 – 2 tsp flavoring

Instructions

  • Begin by dipping the sticks in water and then rolling them in sugar. A plate works well to hold the sugar. I only dip it where I want the sugar crystals to grow. Set the sticks aside and allow them to dry. These are the seed crystals that the other crystals will grow on.
  • Add a large pot to the stovetop and set to medium heat. Pour in the water and bring it to a simmer. Then add in the sugar a cup at a time, stirring it to dissolve the sugar. Bring it to a boil. If you are only using one color and flavor you can add it in right when it boils.
  • Remove the pot from the heat and allow the sugar solution to cool for 20 minutes.
  • After 20 minutes run the tap water until it gets really hot, let the water run over the glass or mason jar to heat it up until really warm. Make sure to use a wide glass or mason jar like the 800ml kind if you want larger candies, but you will get fewer of them, with this amount of liquid you will get 1 large one. Smaller mason jars or glasses for smaller candies, but you will get more of them. 2 to 3 of them.
    Pour the hot sugar solution into the containers. If you are using a metal thermos no need to heat it up. If you want different colors now would be the time to add those colors and flavors.
  • Attach a clothespin to a sugar stick and set it in the solution. If necessary use a metal ring on top of the mason jar so the clothespin can sit on it. Try and keep the stick in the very middle of the glass and at least 1.5 inches from the bottom. If it is too close to the bottom the crystals might fill up the bottom.
  • Let the crystals form for 3 to 5 days. Use a fork and gently break away any thin layer of sugar that has formed on the surface of the solution. Then pull out the rock candy and place in another container to dry for 4 hours. That's it! Enjoy!

Video

How to Make Rock Candy | Easy Homemade Rock Candy Recipe

Notes

1.) Each jar of the solution has much more solution than the resulting piece of rock candy. You may reuse the solution, but you will need to reheat it and add another cup or so of sugar to replace the sugar loss.
2.) The amounts of candies will totally vary depending on what size container you use, you can make smaller candies with smaller containers, bigger containers/jars will hold more liquid making fewer candies.
Β 
homemade rock candy nutritional facts

Do you like the recipe? Please give it a rating and comment down below, I really appreciate it.  If you make it tag me on Instagram @inthekitchenwithmatt. Also, sign up for the newsletter so you won’t miss out on any of my new posts and recipes.

Here are a few more recipes you may like:

Easy Basic Italian Bread

Pimple Popping Cupcakes

Edible Sugar Glass

Easy homemade rock candy pin for pinterest

131 Comments

  1. How many cups of sugar do I use for the mixture?

  2. Dassie Segal

    My daughter did this and used glass cups (our β€œfancy” ones😬) and she took out the candy, but the rest of is rock solid and we can’t get it out. I’ve tried hot water, but I’m afraid boiling water will break the cup. It’s so completely rock solid and on the bottoms of the cup. I can’t scrape it out. Any suggestion?

    • hi there, Dassie! Yes, just run the water as hot as it will go from the tap and just keep it flowing inside, eventually it will loosen it up and melt the sugar. πŸ™‚

  3. Lia Anderson

    5 stars
    If I wanted to make clusters of rock candy instead of on a stick, do I just pour the solution in the mason jar and then let it sit for 5 days?

    • Hi there, Lia! No, you need it to grow on something. If you just put it in the jar, they will grow in the jar, but it is too hard to get it out haha. You could experiment with a couple of different things. Like using an old half-gallon milk carton, which may work, just make sure the liquid isn’t too hot when you pour it in. That way you could just cut the carton. I haven’t tried the carton, just giving you ideas πŸ™‚ Or like those wax paper cups, like used for hot coffee.

  4. Would this work great for a school project?

  5. 5 stars
    Hi! What kind of flavouring do you use? I saw the link but are there any alternatives?

    • Any flavored extracts will work. πŸ™‚ Some of the common ones to find at the supermarket are orange extract, cherry, lemon, mint, etc. That link I shared gives a huge variety. You can also dissolve kool-aid in the sugar solution to color and flavor it.

  6. 5 stars
    I am looking forward to trying to make this but how much flavoring oil should I use for a batch?

  7. 5 stars
    I made the recipe with 1 cup of water to almost 3 cups of sugar – 1 teas at a time. When I poured the mixture in the jars it was thick – not clear! Help!

  8. 5 stars
    I run a candy shop on Etsy, and I was interested in making rock candy resembling worm on a string, but I’m not quite sure how or if I can even do that. What do you think? And if I can, how do you think I should go about doing that?

    • mmm, I am not sure if you could get it to grow that way. The string would stay long and straight because of gravity. It wouldn’t be curved like a worm. You would need to use some kind of curved stick. A fun experiment for sure.

  9. 4 stars
    I made the sugar water mixture, and I put it in the Mason Jar. But, I’m waiting for the sugar on the stick to dry. How long would you say it takes for it to dry? πŸ€”

    • When you dip the stick in water and then roll it in sugar, it only takes 20 minutes or so to dry, at least in my house. It should be dry by the time the sugar liquid has cooled enough.

  10. Vicki L Fikes

    Hey Matt looks great. Can you reheat the sugar water after removing your finished rock candy and repeat the process?

  11. If I leave a stick in the sugar solution for a longer period of time will the crystal’s continue to grow larger and larger?
    Can I reheat the sugar solution, add more sugar (or even just make more) then put the same stick with already formed crystals to continue growing more rock candy on that stick?

    I have these ridiculously oversized jars and I want to make enough sugar solution to make ridiculously oversized rock candy, because why not right πŸ™‚ , and I was considering multiple layers for multiple flavours on the one rock candy stick for a flavour mixture πŸ™‚

    • Hello, Missy! Yes, the longer you leave them the more crystals will grow. You can reheat the leftover solution, but will need to add another cup of sugar, to replace the sugar that grew on the stick. I have never tried adding different layers, so that would definitely be a fun experiment. πŸ™‚ Try it like this first, so you get the hang up of it, since it can be tricky at times since it is more of a science experiment than something like a pancake recipe which pretty much always turns out. Good luck and have fun! πŸ™‚

  12. 5 stars
    Awesome recipe! Although when I am putting the sugar coated sticks into the sugar/water solution, all the sugar seems to fall off the stick. Why is this?

    • Thank you! The liquid still may be a little too warm, but it still may be okay. You can let it cool just a little longer, and reroll the stick in sugar. Make sure the sugar dries on the stick completely first before dipping it.

  13. 5 stars
    It might be a dumb question, but can you put two sticks in a jar , or does it have to be one stick per jar.

    • Hi there! No, you can only do one stick in the jar. Otherwise they would just grow together. πŸ™‚ If you had a wide enough container though, you could do more than one. But it would have to be twice as wide as a mason jar. πŸ™‚

  14. Why does my solution turn to sugar instead of crystals?

    • It sounds like you measured the ingredients incorrectly. The sugar solution, should remain a liquid even after the crystals for on the stick, lick in the pictures and video? Did you watch the video as well? That might help if you haven’t watched it yet.

  15. I tried this recently using several different sized of mason jar, just what I had empty. I prepped the lollypop sticks by wetting them and rolling them in sugar, but when I checked them after one day, the entire bottom of all three jars were completely overgrown with crystals, with very little on the stick. I didn’t expect much to be on the stick after one day, but the bottom inch or two of each jar was totally overgrown.

  16. Jan Christensen

    I’m going to try this right now with my grandsons.

  17. 5 stars
    I have everything but the clothespins. Any ideas on how to secure the sticks otherwise?

  18. Sara R Perlman

    We did this experiment after growing crystals on pipe cleaners with borax and water; which turned out beautiful! I told my kids that we can do a similar experiment with sugar and it would be so fun to eat for a treat afterward. However, I was doing this with them when they should have already been in bed (confessions of a Mommy) so I was feeling rushed and exasperated.
    I sure hope I didn’t ruin the candy…
    1. I dipped my lollipop stick in water and sugar and let it dry.
    2. Then I made the simple syrup.
    3. While that was cooling, I used little plastic dixie-type cups, put a drop of LorAnn flavoring and a drop of gel coloring in each one.
    4. After 25 minutes, I poured the hot syrup into a measuring cup with a spout to pour into my little cups.
    5. I used my lollipop sticks to stir the color and flavor before propping them up with forks (couldn’t find my clothespins-go figure!)
    6. All the ones with lemon oil spilled through the bottom of the cups; I have a feeling the acidity of the lemon oil vs. the other flavors ate through the bottom of the cup while we were waiting…some I caught in time and stacked into another cup, the others were a big mess on the counter.
    7. Because of the big mess, I transferred all the cups to sit in a 1/2 sheet pan and moved the pan to a different surface.

    In other words, I do not think I followed even one direction properly…any chance of them growing or should I just start over?

    • Hi Sara! Fun that you are trying them out. I really wouldn’t use plastic dixie cups, the sugar solution is just too hot. You need something like a mason jar or really wide glass. Even a metal thermos will work too. You can start again, or pour all of it back into a pot and reheat it. πŸ™‚

      • Sara R Perlman

        The solution wasn’t too hot after it sat for 25 minutes; it didn’t melt or disfigure the cups or anything. The only ones that had a problem were the ones with the lemon oil and they were a problem mostly before I even put the hot liquid into them. If it won’t work because they don’t retain heat, that I would understand. I am not giving up on these yet; will let them sit and see what happens and if it doesn’t work, I will remelt them and make them on my own, when my kids are not around :).

        • Ahh, I see. Hopefully, the crystals do grow! It is a very fun experiment, can be finicky, but really awesome when they work. πŸ™‚ Keep me updated on how they turn out. πŸ™‚

  19. 5 stars
    Is it normal when you leave it to cool in the pot, crystals form?

    • Hi Lydia, yes, that is normal and crystals may start to form. Most of the time the reason why they form is there was a bit of sugar on the sides of the pot that didn’t melt. Sometimes, you need to use a damp basting brush and brush those down while the solution is heating up.

      • I am going to make my own rock candies following your directions above and am wanting to use 32 oz mason jars to grow my crystals in. For 1 batch of sugar solution (1 cup water, 3 cups sugar) how many jars will that fill? I am wanting to only make enough solution for one jar and am trying to figure that out.

        • Hi Roger, that will be enough for 1 jar. πŸ™‚ The mason Jars I normally use are the 800 ml or around 24 oz. So a 32 oz will be a good size as well. It will hold all the solution for one batch. Good luck! Let me know how it goes. It is a fun experiment for sure.

  20. 5 stars
    When I let the syrup cool, it starts to crystalize on the top. Is that normal? What can I do to prevent it?

    • Hi Lydia, so sorry for the late reply! Yes that is normal for it to crystalize on top. After the rock candy grows, a lot of times you need to gently crack the top to get it out. How did it go?

  21. 5 stars
    When I left the syrup to cool, It formed crystals on top. Is that normal? How can I prevent it?

    • Yep, that is normal. Especially if using a narrower glass or container for the solution. I am pretty sure I show that in my video tutorial which you can find on the post as well. It is usually a thin film of sugar that forms across the whole top, that you gently break to pull the candy out. The only way to prevent it is to have a much wider glass or container, but that would require more solution/syrup.

  22. When I let the syrup cool, It starts to form crystals on the top. Is that normal? How can I prevent it?

    • Hi Lydia, it is normal to have some crystals form on top, a lot of times it will form a thin top of crystals all the way across the top of the glass, then you gently break to pull the candy out. I think I show that in the video tutorial. The only way to prevent that is to have a really wide glass, which would require more candy solution.

  23. 5 stars
    This was amazing thank you so much for this helpful vidπŸ˜†

  24. 5 stars
    Will a string work as a substitute for a lollipop stick?

  25. Kirsten Allen

    4 stars
    Hello!
    It seems like our entire jar solidified after about an hour.
    Any idea what we did wrong?
    Thanks again for the recipe!

    • Hi there, Kirsten, since growing rock candy isn’t an exact science, and can be very finicky, there are several things that could have gone wrong. How wide is your jar? How far did you put the stick down, is it a stick or string that you used? Did you heat up the jar before adding the sugar solution? The good news is that you got crystals to grow! But it may take a little practice and experimenting to get it to grow exactly how you want it. Even I have had issues on occasion.

  26. 5 stars
    do you have any flavors that you would recommend for your first time doing these things? like vanilla or peppermint?

    • Hello, Marlee! Peppermint is good, any fruit flavors would be good.

      • Why did my sugar fall off when I put it the stick in the solution? I wanted two hrs for the stick to dry. Am I supposed to insert the stick 10 mins after boiling or do I let it cool and then place the stick? School project for my kids and I can’t get it to work. Please help.

        • Hi Katie, what do you mean, the seed sugar? It shouldn’t take 2 hours for the seed sugar to dry on the stick. Just lightly dip it in water then roll it in the sugar, it should be dry in less than 20 minutes or so. Also, you let it cool for longer than 10 minutes after it boils, it should be 20 minutes. Step 3 in the printed recipe. πŸ™‚ Let me know if that helps.

    • 3 stars
      Marlee, we some cotton candy flavored extract online. It’s a great flavor to have for many different things from rock candy to ice cream. Also, raspberry extract with blue coloring. Root beer turned out to be a big hit around our house. Banana wasn’t bad. Just about any flavoring extract works. Good luck

  27. So, I haven’t tried this yet, but I was wondering if popsicle sticks would work instead of lollipop sticks?

    • That is a good question, Grace, I think so, I haven’t tried it with popsicle sticks, so I can’t say for certain.

    • 3 stars
      Grace, popsicle work just fine. We had the best looking ones when we used wooden BBQ skewers and cut the sharp end off. Cut to length of container and you’re ready. We also use what we but if leftover syrup to lightly coat the skewers and then roll them in sugar and let dry while the syrup cools. Gives you a massive head start for some larger crystals. Also, the container greatly affects the crystallization process. Best thing ever is the old metal coffee thermos that had the metal cap that could be used as a cup. But to answer your question….yes. Good luck!

  28. Hi Matt I wondered what would happen or if i could not use flavoring in my rock candy?

  29. I was wondering if the solution needs to cover the stick completely? I only have the jar half full with solution.

  30. I messed up badly, but i forget to put the sea crystals on the stick, i was in a rush because my deaf little sister wanted to make it so i had to rush so hopefully something nice turns out 😯

    • Yeah, unfortunately, you need to dip the stick in water and then roll it in the sugar, for the seed crystals. Not sure it will turn out. If not you can start again. πŸ™‚ Let me know how it goes.

  31. 5 stars
    This was the first time I ever attempted any candy making.And I must say my kids loved making them as we nailed it on our first try with 6 pops.Next time we need to try flavors.Thank you

  32. 5 stars
    This was perfect! After 2 failed attempts with other recipes we found your kitchen and 7 days later we have 4 sticks and 2 strings of candy, plus a bunch of pieces on the top and bottom!

    • That is awesome! I am so glad you tried it and were successful, Jes! πŸ™‚ Food science is fun isn’t it? πŸ™‚

      • I should note that we tripled the recipe to get 6 servings. But could probably add more sugar and reuse the solution. Also we found our wood worked better than the string. We used mint in green, vanilla in purple, and orange in orange. My son didn’t put very much dye in because he wanted to see the crystals growing. He’s ready to try again πŸ˜†

        • That is so cool! πŸ™‚ So glad he had fun making it. Such a fun experiment that you can eat! Yes, it takes quite a bit of sugar solution to make a nice piece of rock candy that doesn’t get stuck to the bottom, haha. And you can try reusing it, just heat it back up and add about a cup additional sugar to it. I think the stick works a little better as well than a string.

      • Hi, I was wondering if you had any tips for doing these in a larger batch? I want to do about 40 but I just cant imagine lining up 40 Mason jars lol

        • lol wow, that is a lot!! You could use a lot of wide deep pots. And then run a plat narrow board across that will rest on top of the pot. Which would have little holes drilled through them so the popsicle stick/bamboo skewer would fit through it. Then to make sure it doesn’t slide out, put a clothespin on the top of each one. Maybe a few of those cheap aluminum roasting pans would work. With that said I would experiment first with a small batch just to get the hang of it, it can be a little tricky, haha. Fun though! Let me know how it goes.

  33. hi this is 11 year old catherine, i am very happy how it is so far, no crystals have formed. that’s also because it has only been sitting there for i think about 3 hours, so hopefully it will still grow!!! i will write another comment once some form. i do recommend it so far!!! i do also like the video it was helpful!! thank you matt!

  34. 5 stars
    Hello i am waiting for my crystals to grow and why does it look like there is already a lot of crystals?

    • Hello, Amelia, if the crystals are forming super fast it could mean the jar wasn’t heated up. Did you heat up your jar with hot water first? Are the crystals growing on the stick/string, or are they growing on the bottom of the glass really quickly?

  35. 3 stars
    The numbers on this recipe really need a re-work. It says it yields 6 candies, but we doubled your recipe and didn’t even have enough of the syrup to fill 3 of the 800 ml mason jars to halfway.

    • Yeah, they might be off, I will have to double-check, I made the YouTube video long before I converted it to a recipe for the blog. But did they actually turn out? And I haven’t made them recently.

    • But yes you can get 5 to 6 if you use smaller containers, you just need to make sure the sticks aren’t too close to the bottom of the container. The candies will, of course, be smaller as well. You don’t have to use the 800ml mason jars, that is just what I like to use. To get 5 or 6 of the larger ones, you will need more for sure though. I edited the recipe a bit to better reflect the amount used. I also, mention reusing the liquid to get more candies out of it. πŸ™‚

  36. hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

  37. 5 stars
    Just finished making these, now we wait! Thanks so much for the recipe – very easy to follow & understand! Started out making these with my nephew and ended up doing it alone, it was quite fun though! I don’t understand the amount of negative comments, you made the entire process simple, leaving little to no room for error. Thanks so much!

    • You are so very welcome! πŸ™‚ Let me know how the crystals grow and how it turns out. If you see too many crystals forming on the bottom, you may need to raise the stick a little more from the bottom, otherwise, they can cover the entire bottom and the stick! haha.

  38. 5 stars
    We are excited to try this out later today! Thank you for such a detailed recipe (kids will be leading the project)! Am wondering if you think kool aid packets, without sugar, would work for the flavor and color?

    • Awesome, Amanda! Have fun with the kids and let me know how they turn out. πŸ™‚ You are so very welcome! I am not sure about the Kool packets, it is a great idea, I wonder if it will prevent crystal growth. Maybe try a few different ones as part of an experiment. πŸ™‚

  39. Hi I cant wait to try this a couple ?’s i want to make multiple ones4 a baby shower can i put more then 1 stick in a jar?? And also where do I get flavoring? I want to do pink and white ones any suggestions

  40. Beth Anderson

    3 stars
    It would have been helpful to have an idea of what size container works best for the amount of ingredients you gave. For 1 recipe we used two 500 mL canning jars (roughly 3″ across and 5″ tall), and it was a disaster. The entire container crystallized- and not in the cool rock candy shape or look. πŸ™ I ended up making 2 batches, double checking the recipe carefully each time, and the results are the same.

    • Hi there Beth! Did you review the rock candy troubleshooting tips? That is in the actual body of the post, not the printable recipe. You can see an image of one I did where the whole thing filled with crystals, most likely what happened to you. But yes you are right, instead of just saying a mason jar works best, I should have stated what size. The ones I used are the larger ones, (800ml) which are nearly 4 inches wide by 6.5 inches or so tall. This was one of the first recipes on my blog that I converted from my YouTube video, if you get a chance watch the video, it may help as well. It probably needs to be revamped. Will definitely make those edits so it is clearer πŸ™‚ But glad you tried it and at least got the crystals to grow. Oh also make sure the stick isn’t too close to the bottom of the jar either. πŸ™‚

  41. 2 stars
    It kinda takes a long time to prepare, whereas other recipes finish the candies in 4-6 hours. Plus, it is not worth it because they don’t taste that good anyway. Kinda doubtful about all the “fun and easy” comments cause it ain’t that easy or fun.

    • Wait did you or didn’t you try it? Sorry, you can’t argue with science or rush it. That is how long it takes for the sugar crystals to grow that specific kind of candy and have them look as nice with the big crystals. It can’t be done in 4 to 6 hours there is no way the crystals can grow that fast. And you are accusing the other commenters of lying then? haha Also, easy and fun a matter of opinion I guess. Here is another recipe which is pretty much the same, takes 5 to 10 days. https://www.thespruceeats.com/rock-candy-521016

      • I am planning to try. What do you do with the sugar solution after 5-7 days when candy is ready. Can you reuse it to make more rock candy or is it trashed?

        • Hello Anu, the reason why the solution works to grow the candy is because, it is supersaturated with sugar. Once the crystals formed, it can beused but it is no longer saturated, so you need to reheat it and add more sugar to it, but not as much. If that makes sense?

  42. Thank you for this awesome recipe! I’m super excited to try it! Is there a way to make crystals form with out a stick? Like out on a flat surface? I wanted to try to make my own rock candy for a geode cake! Or could I just break it of the stick once its all done? Thank you!

    • Hi Lauren, you need to have seed crystals for the sugar crystals to grow on. I have never tried it without a stick. You could just break it off the stick once it is done. Some people do it with a string as well!

  43. 5 stars
    This is interesting and delicious! It would have never occurred to me, to make “Homemade” Rock Candy. Thanks!

  44. 5 stars
    I want to make my own version of Homemade Rock Candy! Sounds like a fun treat for kids!

  45. 5 stars
    This looks amazing and tasty, can’t wait to try this

  46. 5 stars
    This looks way easier then I would have thought. I am thinking about making this for my daughter’s next birthday party. Who doesn’t like rock candy? I will let you know how it turns out.

  47. Such a fun and creative idea. I absolutely love it. I can’t wait to make this with my kids. Thanks! πŸ™‚

  48. 5 stars
    Nnniiccceeee….I like this candy already! Though, it has quite a lot of sugar. I may not handle it so well now.

  49. Wow, that candy looks good. I never knew it was possible to make at home. Thanks for the recipe.

  50. 5 stars
    This is probably my favorite blog post so far from you. This is by far one of the coolest DIY I have ever read regarding how-to-make-rock-candy because it gives you a real, tried and true in depth way of making it. I think I am going to try this recipe. Excellent blog post.

  51. I am making these with my kids! This looks so fun!

  52. That is so awesome! I’m going to bookmark this for a future day.

  53. Katerina @ diethood .com

    5 stars
    My kids would LOVE these! I can’t wait to try this recipe!

  54. 5 stars
    I know so many kids that will be all over this. Can’t wait to try it!

  55. 5 stars
    I LOVE these! This would be something awesome to make with the kids!

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