So I was going to enter this into the sugar contest and started preparing this project a few weeks ago. Must be three or four weeks ago by now. By now someone else has actually beaten me to it with a rather successful rock candy ib'le, but guess what? There's a EPIC FAIL contest, so why not enter this one as well, haha? For what it's worth, I believe there was a very small growth and the thought of the process is pretty neat.
Step 1: Ingredients
LOTS of sugar (3:1 ratio with water)
Skewers or so (I only had chopsticks)
Food coloring (optional)
Step 2: Dissolving the Sugar
The amount of pieces of rock candy you want to make and how many glass containers you have will determine how much water to use. The sugar/water ratio is 3:1, so for one cup of water, add 3 cups of sugar. I also added some vanilla extract to the water while the sugar was dissolving.
Step 3: Prepping the Skewers
Once you have syrup, dip your skewers into the solution and then cover them in sugar granules, which will allow the rock candy to grow.
Next, set the syrup aside and let it cool down. This is important because once you dip the sugar covered skewers into the solution, it might dissolve if your syrup is still warm.
So, even though I let my syrup cool down, I found that my sugar on the skewers dissolved anyway. Once I noticed that a few days into the whole deal, I dipped the skewers into syrup and sugar again and stuck them into the freezer. I do think this helped at least a little bit.
Step 4: Setting Up the Containers
So next, I added a drop of food coloring to each container, then dipped the sugar covered skewers into them and used the clothespins to hold them in place.
THEN you wait..............................
Step 5: I Waited One Week
Step 6: I Waited Two Weeks
After two weeks I noticed a sugar crust had developed on the surface, but nothing so far on the skewers (what you see is just from what I did at the beginning). I decided to just leave the skewers in the containers to see if they would ever grow any candy at all.
Step 7: Three or Four Weeks Later...
So this is what we got! Kinda a big disappointment. I think a tiny bit did grow, but it sure wasn't worth all the waiting and ALL that sugar. Man, that was just SO much sugar.
On a brighter side, this was one of the quickest and simplest instructable I've ever written. Haha. ;)