
A cool science experiment that’s also delicious.
Our Japanese-language reporter Tuku Inui found an interesting fun fact while surfing the net and decided to try it out: making glowing gummies at home. The secret ingredient was Oronamin C, a popular carbonated drink in Japan that has a bunch of vitamins and amino acids and once had one of our reporters in its tasty clutches. Here’s how Tuku made them.
Ingredients and supplies:
1 bag gummies mix
1 teaspoon Oronamin C
30 grams (1 ounce) water
Molds to put gummies in (silicone is recommended)
Microwave-safe dish
Microwave
If you’re in Japan, you can get a gummies mix at Daiso in one of three flavors: apple, grape, and strawberry. Note that it’s a popular item, though, so you may have to visit a few branches before finding one that’s not sold out! Tuku managed to find some apple-flavored gummies mix. There are instructions on the package, albeit in Japanese, so here they are in English:
First, add all of the gummies mix and water to a microwave-safe dish. Mix well.
If you want to make the gummies glow, add one teaspoon of Oronamin C (this instruction isn’t on the package, by the way). Mix together.
Put in the microwave on a 500-Watt setting for 60 seconds.
If your mixture looks like beer with some head on it, you can move on to the next step. Otherwise, keep microwaving until it looks like this.
Mix one more time. The bubbles will disappear quickly as you mix.
Add the mixture to your molds.
Once they’re full, put them in the refrigerator until they’ve reached a gummy-like texture.
Tuku let them harden in the fridge overnight and tried the glowing experiment the following day. Removing them from the molds proved to be a chore as they were very solid and stuck to the sides, so we highly recommend using something flexible like silicone.
▼ It might even be helpful to lightly grease the molds before pouring in your mixture!
Tuku tried the glowing experiment using a blacklight, but you can also use anything that emits UV light, like a gel nail curing machine. Get ready to see what they look like. (Warning: bright flash in the following GIF)
▼ Ta da! Glow-in-the-dark!
Tuku was blown away by the results. If you’re wondering how this is possible, it’s supposedly due to the vitamin B2 included in Oronamin C. This particular ingredient responds to UV light by, well, glowing. And as a bonus, they were pretty tasty.
▼ Tuku is considering trying the other gummies mix flavors available.
So if you’re looking to kill some time in Japan with a fun science experiment, Tuku highly recommends this for the wow factor. It also doubles as a snack–perfect! Pick up some magic gummies, too, while you’re waiting for the glowing gummies to harden.
Photos ©SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
[ Read in Japanese ]












We learn how to make tofu with this at-home make-your-own tofu kit【SoraKitchen】
Japanese restaurant chain shows us how to make katsudon in three minutes【SoraKitchen】
We can’t stop eating this chicken ramen noodle and chocolate snack we made【SoraKitchen】
How to turn McDonald’s chicken nuggets into tasty katsudon in five minutes【SoraKitchen】
We try a method for making ice cream that doesn’t require a freezer【SoraKitchen】
Silicone testicle covers banned from Japanese sauna following cups being left behind and on shelves
Visiting Japan’s one-and-only, and only-for-a-limited-time, Dragon Ball noodle restaurant[Photos]
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
7-Eleven Japan now sells bagels…cooked in bamboo steamers
Is Tokyo Station’s startlingly expensive wagyu bento boxed lunch worth its high price?[Taste test]
Japan asked to vote on what to officially call insanely hot days
We eat 13 of the most highly recommended sushi items at Sushiro and pick the best of the best
Cheapo News: We discover a Tokyo sushi shop with unlimited inari-zushi
Kentucky matcha?!? KFC Japan now has frozen green tea dessert beverages
Japan has an awesome one-person bento box rice cooker, and here’s what we made with ours
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
One Piece creator has hidden secret of anime treasure’s identity in chest at bottom of real-world ocean
Japanese government planning higher ticket prices for foreign tourists at Tokyo National Museum
Live-action One Piece’s Luffy teaches Sesame Street’s Elmo a Japanese word for friendship[Video]
Studio Ghibli now sells Ursula’s backpack from Kiki’s Delivery Service at its anime shop in Japan
Sakura Festival in Chiyoda mixes illuminations, boats, music, and Rilakkuma in the heart of Tokyo
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Japan’s newest Shinkansen has no seats…or passengers [Video]
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Foreigners accounting for over 80 percent of off-course skiers needing rescue in Japan’s Hokkaido
Super-salty pizza sends six kids to the hospital in Japan, linguistics blamed
Starbucks Japan unveils new sakura Frappuccino for cherry blossom season 2026
Foreign tourists in Japan will get free Shinkansen tickets to promote regional tourism
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
How to make a hot pudding drink with Japanese purin【SoraKitchen】
Here’s the oldest recipe for Japanese curry in existence, and how it tastes【SoraKitchen】
How to use leftover Japanese curry: We test out a recipe for curry bread quiche【SoraKitchen】
Our Japanese reporter falls in love with “Lebanese-style gyudon”【SoraKitchen】
We put Japanese custard pudding on toast and it’s the best thing ever【SoraKitchen】
We try cooking yakisoba with real Japanese buckwheat soba【SoraKitchen】
Stop what you’re doing and go make Japanese-style s’mores right now with our recipe!【SoraKitchen】
Here’s what happens when you mix 75 types of Japanese instant curry together【SoraKitchen】
3 quick tips to turn your bowl of home-made noodles into a restaurant-beautiful dish【SoraKitchen】
How to make an awesome Japanese summer dessert using only things you can buy at Daiso【SoraKitchen】
Japan’s new fruit sandwiches turn the concept inside-out, we make them even better【SoraKitchen】
We try out Japanese candy maker’s recipes for how to make hard candy drinkable【SoraKitchen】