We have several systems in the Flanigan house. I just wish one of them was a working system of indoor plumbing, especially in the winter. Brrr. Anyway, our leftover system is very simple. If any leftovers remain in the refrigerator for more than a couple days, I eat them. And any open jars that are put into the refrigerator should have the date they were opened written on them. As my youngest daughter looked in the refrigerator yesterday for some opened pasta sauce to add to some leftover pasta of hers that she knew I had been eyeing, we were both stumped when she encountered this jar’s lid with a curious inscription.