the taste could also come from liquid extracts. some people don't like (and can't drink) beers made with liquid extract, where as dry is fine. if it also tastes a little off, like too tangy, this might be the case with you. i'm 1 of those, and any lme beer i try tastes that way. even though 95% of the time i'm an all-grainer, i love a good hefeweizen made with dry extract. not likely, but just something to keep in mind.