When I first married my husband, he also kept the jar of bacon fat in the fridge. He didn't use it. Just saved it up, until it got full and then he threw it away. I was very mystified about this practice and chalked it up to a weird Midwestern thrifty habit. Now I learned from my commenters that this was a common practice among their grandparents.
Question of the Day: What weird, gross foods did your grandparents eat?