Timeline for Why does caffeine taste bitter when added to tea?
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| Jan 24, 2015 at 20:17 | comment | added | Tony Arra | @rumtscho I'm aware that tannins are astringent, but they're also described as bitter, despite being an acid. They are a polyphenol; polyphenols increase in bitterness and decrease in astringency inversely to their polymerization. I would still call strong decaf black tea bitter, but perhaps that's still due to the small amount of remaining caffeine. Tannins increase with brewing time, so it makes sense that tea brewed longer is more bitter and astringent. | |
| Jan 24, 2015 at 20:08 | comment | added | rumtscho♦ | Tannins are not bitter, they are astringent. It's a different perception, not even a taste. Caffeine is bitter on its own. | |
| Jan 24, 2015 at 20:05 | history | answered | Tony Arra | CC BY-SA 3.0 |