![Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE](https://i.gzn.jp/img/2023/03/20/boss-caffeine/p1058294.jpg)
Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE
Suntory BOSS Coffee ANZ - WIN a case of our new Iced Caramel Latte just by tagging a friend who you can't wait to go to Japan with 🙌 🗓Competition ends 13/11 | Facebook
![BOSS Coffee: Japan's Best Coffee Comes in a Can?! (But We Tried It Anyway) | LIVE JAPAN travel guide BOSS Coffee: Japan's Best Coffee Comes in a Can?! (But We Tried It Anyway) | LIVE JAPAN travel guide](https://rimage.gnst.jp/livejapan.com/public/article/detail/a/00/01/a0001159/img/basic/a0001159_main.jpg?20200817201041)
BOSS Coffee: Japan's Best Coffee Comes in a Can?! (But We Tried It Anyway) | LIVE JAPAN travel guide
![Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE](https://i.gzn.jp/img/2023/03/20/boss-caffeine/p1058305.jpg)
Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE
![Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE Boss canned coffee boasts the largest caffeine content in history, but I drank two kinds of 'boss caffeine', which is super easy to drink and has a refreshing sweetness - GIGAZINE](https://i.gzn.jp/img/2023/03/20/boss-caffeine/00.jpg)