Sancere quandry

[Blue]

I am a pretty big fan of Sancere but there is something I have a hard time figuring out.

Every time I pop open one of these bottles I am delighted by the crisp tart flavors and the wine's flinty qualities and love those first couple glasses... Sancere goes so well with fish too...but what I can't seem to figure out is that as the evening wears on the wine begins to ....sorry I can't find the word I'm looking for in English, the word that comes to mind is "ecoeurer" which my dictionary translates as disgust....no that's not really what I mean....its more like a good very sweet chocolate...after a few you just can't have any more they are too sweet, I am "ecoeurer."

Anyway I find that Sancere and P. Fume often have the same effect on me, whether they be $10 bottles (tonights 1999 Les Champs Plots Sancere) or $50 bottles (Didier Dageneau's Pur Sang P.Fume). Do any of y'all experience that? My guess is that its the mineral taste that has that effect on me, but that's just a guess.

Any thoughts, comments, suggestions?