They didn’t finish the jar!
I guess most people who can check the rim of their jars for nicks or chips. I typically run my finger around the edge to feel for them. This didn’t exactly work in this case.
When the lid on this jar didn’t seal, I looked at the rim of the jar to try and figure out the problem. And then, I looked again. It took me a good while to see it.
One section of the rim looks like it was just starved for glass in the manufacturing process. It’s nice and smooth – which is why I didn’t feel anything – but it’s apparently too thin to hold a seal.
I’m going to have to start inspecting more closely!
