I agree about the rough taste in general. I've made it a habit to try as many different canned coffees as I can when visiting Japan (and every "black" coffee I saw), and looking back at my notes, I felt like "Premium BOSS Black" was quite good, and "UCC Black New Grounds Fruity Blend" and "UCC Black Wholly Brewed" were both decent, compared to most of the other black coffees.
anotheruser13|2 years ago