it’s safe because it was only on the lid. to prevent that, you can store your sour cream “upside down” which creates a better seal to keep air out. i would have just cleaned the lid off and kept using it though, since it wasn’t yet expired.

No it is not ok. Chances are they probably won’t get sick, or anything more than an upset stomach, but it can be very dangerous. Don’t do it again with any food

you tell me sherlock.

Whatever you do you will eventually get mold if you leave the grout wet.

For this reason I would advocate drying the grout after each use, I know it’s a bore, but it only takes a second or two.

You will be fine. We eat mold that we don’t realize all the time. I LOVE bleu cheese crumbles or dressing, and it’s made with mold. I haven’t gotten sick yet! You are perfectly fine. The acids in your stomach will break it down just fine. You MIGHT notice some diarrhea but that is if you ate a lot of it, I bet you are fine. :]