Back from picking up packages, a Gelson's stop, and I just had to throw out an entire batch of faux chicken stroganoff, which is so irritating I can't even tell you.  I hope I don't get food poisoning for the few tastes I had - about four - to make sure I was tasting what I was tasting.  Since it was great until I added the sour cream, the sour cream is the culprit.  Brand new, never opened, supposedly good to the end of July, bought just a week and a half ago - and obviously gone bad.