Our family buys a lot of a certain kind of stroganoff-flavored noodle, to be made as a side dish with dinner. It comes in a little envelope, with the dry noodles and the powdered sauce/flavoring all mixed together. You tear open the envelope, pour it all in the pan with some water/milk/margarine, and cook. Easy to make, and delicious.

It's a popular flavor for that brand of noodle, and we sometimes go to the store and find them to be out of stock for just that flavor. So one week, on our shopping trip, we decided to stock up. We don't like getting caught without our noodles (so to speak). We bought the entire on-shelf stock they had at the time, which was close to a dozen of these envelopes.

We got it home to discover that they all were noodles-only, no flavoring.