Rock Candy Recipe How To Make Large Sugar Crystals

sugar rock candy large crystals

Large sugar crystals on lollipop sticks, otherwise known as rock candy is a fun experiment to make at home with the kids.   You don’t need many ingredients but you will need some patience as they take a few days to form.

Rock Candy Ingredients

3 cups sugar
1 cup water
lollipop sticks

watch the video here youtube video how to make large crystal rock candy

Fill a thermos flask with hot water and leave to sit.

Combine all ingredients in a saucepan and heat until a spoonful lifted up looks clear.
Empty the thermos flask and pour in the sugar solution. Cover the top with a double layer of aluminium foil and then poke your lollipop sticks down into the center.
Try not to disturb the sticks, watching them grow is half the fun so go on have a quick look once a day. And after four or five days you will have some nice chunky sugar crystals.

rock candy big crystals
You may have seen other tutorials that tell you to pour the sugar solution into a glass, if you do that the solution cools down quickly forcing the sugar to crystalize fast into lots of little crystals. The image above shows the large crystals made in a thermos at the top and smaller ones made in a glass at the bottom.

You might also like rock candy geodes
how to make rock candy


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About Ann

Hi I'm Ann, food scientist, dietitian, wife, mum to 3 boys. Join me each week for desserts, chocolate and cakes.
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15 Responses to Rock Candy Recipe How To Make Large Sugar Crystals

  1. Marina says:

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  2. Denise says:

    This is are science projects……it’s really fun to make.

  3. Niesamowita ocena. Właśnie tego typu opinii szukałem.
    Wyślę tę witrynę przyjaciołom. Zaświadczam że będę tu wchodził.
    Szczęścia w dalszym blogowaniu.

  4. Diana says:

    Hi Ann,

    Does that mean you will only make two rock candy stick at a time? I want to make a lot for a birthday party… Thanks!

  5. jeneba says:

    I love it so delius

  6. Sandy says:

    Hi Ann,

    Just found your website, I just love it. Going to make chocolate cake, and the macaroons.

  7. ran x says:

    ta thats great you make such wonderful stuff.. x

  8. Aisha Marafi says:

    Hi there,

    I love what you do its really great and you make it so easy for me to cook.
    I was wondering if its not too much trouble can you put the recipes in one page and make them into pictures so that I would save them on my desktop I just find it easier to look up when I need a recipe or put them in a link as a PDF file and we could download them all at once with pictures.

    best regards and all the best

  9. joanna says:

    Hi, other tutorials say that if you see no formations at all with 2-3 hours, that you should reboil the mixture and add more sugar….
    Also, other tutorials say to be careful that the string (I am using a skewer) doesn’t touch the bottom….
    And finally, other tutorials say to bring the water to a boil, dissolving one cup of sugar at a time, then add flavorings/colors….
    What do you think about those instructions? Do they change the outcome?

  10. Anne says:

    Hi Ann,

    Can I have your e-mail address please?

    thank you

    • Ann Ann says:

      Hi Anne you can contact me through comments section here or if you would rather you can go to the howtocookthat youtube channel or facebook page and send a message there.

  11. diane petty says:

    A cheap version of those sugar sticks that you buy to stir your coffee with, and it will work with brown sugar too. great idea. Thank you.

  12. Chaitanya says:

    I am very much eager to see my kids faces when I make and give it to them.they would be very much excited

  13. Chaitanya says:

    Awesome,always loved your videos

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