A MAJOR excess of nutrients may lead to decreased aroma (at least in wines - I'm not sure about meads), and may created some metallic or yeasty flavors (the yeasty ones age out usually). Large overdoses of nitrogen can also lead to increase production of H2S causing sulfur odors (as can nitrogen deficiency).
__________________
"Our results are merely the result of carefully managing the transformation of bee spit into yeast excrement."
--- Wayneb
|