Super-sweet chocolate + crunchy cookies = Black Thunder
It had been a really, really long time since I'd had Black Thunder. It was hugely popular for a while, and I was obsessed with it in elementary school. I heard you couldn't even buy it in Japan back then!
I think one of my classmates brought back a bag to hand out to everyone, and everyone looked at them like they were a celebrity. It was hilarious 😆
I was no exception, because I also wanted to taste what everyone was scrambling to get〜
Sure enough, it tasted extra special. I also had a huge sweet tooth back then. Wow, it was so good〜 I really wanted another one.
Back then, anyone who had Black Thunder was a celebrity. Elementary school was so simple and uneventful, haha.
But now,
when I see it at a convenience store, I don't even feel like buying it. So funny.
I've noticed that chocolate products often cause buying frenzies in Taiwan. Does everyone remember the dirty chocolate bun?

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Black Thunder
Shockingly deliciousness! Much Loved Chocolate Bar!
This chocolate snack is very popular for its affordable price of 40 yen and deliciousness.
Cocoa cookie and plain biscuit are coated with chocolate.
You can taste the light bitterness of a cocoa cookie matched with the sweetness of chocolate. Crunchy texture and the volume which can fill your stomach lightly pleases you.
In addition to the large bag type and limited time items, there are also regional exclusive products, which are recommended as souvenirs.
Highlights
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A candy that can be enjoyed at an affordable price.
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Its crunchy texture is fun and provides a high level of satisfaction.
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There are also large bag types, limited-time items, and regional exclusive products.
Photos
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The package with the jet-black lightning is incredibly striking!
Official FAQs
Frequently Asked Questions have been vetted and answered directly by each listing.
Q
Do you have pamphlets in other languages? (If so, please also inform us of the supported languages)
Sorry, we don’t.
Q
If there is a problem with the product after opening, can it be returned or exchanged?
Yes, it can be. If there is any inconvenience, please send us the product and its packaging, noting the name of the store where you bought it and the date of purchase. We will send a replacement along with the postage.
Q
Can it be purchased overseas?
We have operations in Taiwan, Hong Kong, Thailand, and some parts of North America. (As of June 2023)
Q
Does Black Thunder use ingredients derived from animals?
Other than dairy ingredients, no other animal-derived ingredients are used.
Reviews
Some reviews are AI-translated.
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Black Thunder has a rich chocolate flavor that’s sweet without being overwhelming. The crispy cookies and rice crackers create plenty of texture and a satisfying crunch. It’s affordable and comes in various limited-edition flavors, making it a classic snack and souvenir worth picking up when visiting Japan.
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Japan’s super popular Black Thunder chocolate!
The name sounds intense, and eating it feels like getting struck by lightning from all the sweetness.
Every time I go to Japan, someone in my family always asks, “Can you bring back some Black Thunder?”
Personally, I think the sweetness is off the charts, and after one bar I want a cup of unsweetened tea. But my family just keeps eating one after another and can’t stop!
Crispy biscuits mixed with rich chocolate, tasty and budget-friendly. No wonder it’s been popular in Japan for so many years. You can often spot it in supermarkets and convenience stores.
For me, it’s a “sweetness overload alert.”
For my family, it’s “the No. 1 must-buy item in Japan” 😂 -
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You can never find this chocolate in Taiwan, so I bought a ton here for my family and friends. We all love it!
Details
- Product name in Japanese
- ブラックサンダー
- Manufacturer
- YURAKU CONFECTIONERY CO., LTD.
- Retailers
- supermarkets, convenience stores, etc.
- Price
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40yen (excl. tax)
*The price may vary depending on the store. - Calories
- 111kcal
- Volume
- 21g
- Shelf life
- 11 months
- Official Website
- Official Website (Japanese)



