What IS it about Red Zinfandel? ? ? Help!

[amw5g]

Drew,
Curious....I though that tannins could *enhance* the 4/5 tastes: salty, sweet, bitter, sour & (possibly) umami. But they themselves did not have a flavor. Much like temperature or texture can contribute to the overall mouthfeel. So what you are saying is that the tannins are a bitter agent themselves?
Good to know, thanks for the clarification.
-Andrew

[This message has been edited by amw5g (edited 12-06-2003).]