DIY Japanese Candy Kits: Edible Slime, Growing Candy & More

Japan takes snacking to a whole new level. Instead of just opening a bag and eating, many Japanese candy kits require you to actually build your snack before you eat it. Mix powders, add water, watch colors change, and create something you never thought could be edible.

Here are some of the most mind-blowing DIY candy kits from Japan.

Nerunerunerune — The Candy That Grows

This is the classic. Add water to a powder, stir, and watch it change color AND expand into a fluffy, cloud-like candy. Then dip it in a second powder for extra crunch and sparkle. It's been a kids' favorite since 1986 — and it still amazes adults who try it for the first time.

Available in grape, soda, and seasonal flavors. The color-changing reaction is powered by a safe pH-based ingredient — basically edible science.

W Slime Jelly — Edible Slime

Yes, you read that right. This kit from Kracie lets you make two different colored slime jellies — grape and soda flavor — that you can actually eat. Mix them together and the color changes again. The texture is stretchy and jiggly, like actual slime, but it's 100% candy.

This one always gets the biggest reactions on social media. "Wait, you can EAT that?!"

Tsukuro Kinoko no Yama — Build Your Own Mushroom Chocolate

Meiji's famous Kinoko no Yama (Mushroom Mountain) chocolate snacks come in a DIY version. You melt chocolate, pipe it into mushroom-shaped molds, add the cookie stems, and let them set. The result looks (and tastes) just like the real thing — but you made it yourself.

Oekaki Gummy — Draw Your Own Gummy

Pour gummy liquid into a mold, draw your own design with different colored syrups, and wait for it to set. You literally draw your candy before eating it. Kids go absolutely wild for this one.

Why DIY Kits Are Perfect for Content

If you're a content creator, these kits practically film themselves. The visual transformations — color changes, growing candy, stretchy slime — are tailor-made for TikTok and Instagram. Follow us on TikTok (@fujitime.japan) to see these kits in action!

We regularly include DIY candy kits in our Seasonal Surprise Box. Each month brings a different selection, so you never know which kit you'll get.

Get your surprise dagashi box with DIY kits included.
Order now → https://fujitime-japan.com/products/seasonal-surprise-box