Step 5: How it works

By heating and agitating water while adding sugar, a saturated liquid is formed. As the syrup cools and evaporates, the fluid becomes super saturated - meaning the water has more sugar than it can hold. When this happens, sugar looks for a place to escape - these places are called nucleation sites and sometimes called "seeds."

The string provides the nucleation sites for crystal growth. As the water evaporates, more sugar crystallizes on the string - growing the rock candy.
<p>made it! one with vanilla, one with brown sugar, and two each of orange and strawberry flavor. gonna see how they turn out in a week or so. i used hemp string for a rustic look. hopefully it'll turn out with some nice crystals. </p>
Can u use mio for flavoring??
Yes also Walmart has several flavors for under $3 a piece for 2 oz and u really only need a small amount to flavor ur candy.
<p>I don't know why, but my sugar keeps coming off my stick?? I have tried many different solutions but it will not stay. Can you help me?</p>
If u r using string or wood I recommend dipping it in water then dip it in sugar lightly coating ur surface for growing the rock candy. It will give the candy something to grow on. :) good luck next time.
Smoke it.
you can do that... then comment in a week and we will see if u lived
they smoked dick candy on breaking bad in place of meth
rock candy, damn auto correct
<p>Can you flavor/make it with kool-aid?</p>
who wants candy!!!
<p>Count me in!!!</p>
I do!!
I DO!!! :D
Can u wash out that pot easily... my mom mite get pissed if i do this... <strong>please reply soon</strong>
as long as the sugar doesn't caramelize then it will come off with water
If it does caramelize, you can fill the pot with hot water, and the caramel will dissolve.
Can you color the candy?&nbsp; Maybe put food coloring in the water or ad a fruit.<br />
Adding food coloring or fruit gives no real problems. But to flavor the candy, it is best to add a candy flavoring or an extract of some flavor. <br>
Wow this is new.Did u actually eat it?
ive had mine out for over 2 weeks and nothing has happened
i love sean!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
is it eatable?????????????
tis is the fucken bomb
&nbsp;KoZuEst, the pantyhose was a great idea. I tried to and it kept everything out. =D and also, if your having trouble growing the seed and or the crystal, either go out and buy rock candy then use that as the seed, or you can do what i did. Use a sugar cube. It works great lol.
if i put it in a cold area will it harden quicker and not have to wait a week?
to the author you should add a washer to the bottom of the string to keep it straight so if you make more candy you will still have a jar : - )
Maybe I'm missing it, but I saw nothing about the amount of sugar.
<strong>Step 2</strong><br/><br/><em>Keep adding sugar until vigorous stirring does not dissolve additional sugar.</em><br/>
can u make it on a skewer like you see if u buy rock candy from a store?
I followed the instructions and filled the bottle close to the top like you said, and ended up with way too much sugar water. Considering that you have to mix in twice the amount of sugar as water in order to reach the saturation point, you end up with about one and a half times as much liquid. Next time I'm only going to fill the jar a little more than half way. Another tip is to wet the string with water, then coat it with sugar, and let dry. This will attract additional crystal formation. Also, use a paper clip tied to the end of the string and keep it from touching the bottom or sides of the jar.
To get bigger rock candy crystals after you have made the sugar syrup dip the string in it then roll it around in some sugar. Let dry. the put it in the jar. I did that and i got bigger sugar crystals because they had something to grow on and it keeps them from growing on the bottom and sides as much because it has a better texture.
My daughter likes to buy rock candy sticks. The ones she gets have clear (no color), red, green, blue, and yellow crystals - sort of like a rainbow from top to bottom. I wonder how they do that?
ok on my next batch of rock candy i have an idea, my idea is to put a little sugar water is put half in color it, color the other half while still in the pot than carfull put it ontop so see if one will stay ontop of the other, if they do they might do it with 5 colors
A better alternative for the string would be a wooden stick. Probably something like those bamboo BBQ skewers, although bamboo might also be a bit too "slippery". I just think using a stick instead of a string makes the candy better to eat.. like a lollipop. Chewing on a piece of string is somewhat unpleasant. Also, maybe something to protect from the dust? If it needs to sit there for a week.. there will probably be some dust or dog hair in it. I don't like hair in my candy.
aswell as me eating candy off&nbsp;a string .no. but off a skwer yes
You can dust cover as long as it allows the solution to evaporate, that is, no airtight covers (probably not plastic either) ;)
Pantyhose.. :D I know, they put jars of water covered with pantyhose in pianos to keep the humidity levels stabile.
Ummm... I think I should make some Root Beer rock candy! *drools*
brazilian sugar works?
its sweet literally! :D I need 2 make some! actually my friends made rock candy for science class, they wanted to make flavored rock candy and used kool aid instead of sugar. I guess because it was so sugary because of the kool aid it grew bigger faster! I wonder about ice tea rock candy?
yummy candy
nice! finaly i know how to make rock candy. i have been looking all over for ideas
When would you add flavor? Before or after you make the syrup?
I made some with peppermint flavour! you should add some aswell!
do u have to use a string or can u use a thin wooden skewer in a thin sheet of cardboard over the cup so the skewer stays in 1 place?
how much sugar do i need to make it really big like yours trebuchet03
i like your action-scripty shirt
i don't get it =[<br/>

About This Instructable


232 favorites


Bio: Engineer making renewable energy products for African entrepreneurs.
More by trebuchet03: Laser Cut Table Flying Spaghetti Monster Tree Topper How to Build a Megaphone Bike Stereo
Add instructable to: