I bought some organic skim milk recently, supposed to expire November
7. I sampled a little bit and it tasted funny.

I can't describe it any better than to say it had a kind of
"high-pitched sweetness," the kind of sickly sweetness medicine might
have to make it go down better. Not good at all. But then the milk
didn't seem lumpy or terribly sour or in any other way bad.

I've purchased this brand and type of milk for months and months, and
it's never had this taste before. I thought it might be just one
particular carton, but both the cartons I had bought at the same time
taste this way.

I remember this unpleasant flavor once or twice before in milk at
various places. Any idea what causes it?

Thanks.