Fluorescent Kryptonite Candy Recipe for Halloween

When zombies and vampires will knock at your door, you had better have something really impressive to treat them with. This recipe for glowing kryptonite candies should do the trick, but you should hurry, so as to make sure they are ready before Halloween.

Necessary ingredients:

  • 150 ml of water
  • 250 grams of sugar
  • Aluminum foil
  • Candy thermometer
  • Green food coloring
  • Mint oil
  • Powdered sugar or corn starch
  • Quartz crystals
  • Small pot
  • UV flashlight
  • Vitamin B2

The most important ingredient is represented by vitamin B2, which is also known as riboflavin or additive E101. This specific vitamin is known to glow when exposed to UV light, so it will be used for making the candies fluorescent. Besides making the candies look nice, this vitamin will also contribute to their nutritional value. Three capsules will suffice, as a quantity greater than that does not enhance the glowing effect in any way.  Dissolve the content of the three capsules in 150 ml of water.

As you can see, there are several items in that list that are not really edible. The aluminum foil can be used instead of powdered sugar  making the molds. The quartz crystals are necessary no matter if you opt for powdered sugar or aluminum foil, because after all, you want the resulting candies to look kryptonite crystals.  The aluminum foil should be folded around the crystals to create the mold. Powdered sugar or corn starch should be pressed in a casserole dish with a spoon, before pressing the crystals into it.

Place the small pot on the stove over high heat and attach the candy thermometer to it. In order to read the temperature as accurately as possible, you need to make sure that the probe does not touch the bottom of the pot. Next, put the dissolved vitamin B2 and the 250 grams of sugar and mix until the temperature gets to 200 degrees Fahrenheit. When the mix starts to boil, stop stirring it and leave it to reach 300 degrees. At this point, take it off the heat and add a few drops of green food coloring and the mint oil. Mint oil goes well with the green food coloring, but you can use other flavors and colors if you want to. If you decide to stick to green, green apple oil is also a viable option. You are now ready to pour the mix into the molds. When the candies reach room temperature, you can get them out of the molds and “charge” them with the UV flashlight.

The above video provides step-by-step instructions on how to make these impressive fluorescent kryptonite candies. In case one of the kids will come dressed up as Superman,  it will be really interesting to see how he reacts to the kryptonite. The ones from the video do not seem to be harmed from the candies, despite wearing Superman t-shirts.

If you liked this post, please check these geeky Halloween cupcakes and the Star Wars cakes.