Why do wine bottles have that lovely cap on the end covering the cork ? I often wondered since I find a pretty cork in a simple glass bottle without a cap so pretty. My wife recently commented that leaving a bottle in a cellar for several years meant you would probably have to wipe off not only cobwebs and dust but the occasional rat poop.

Suddenly I understood where the tradition of covering the wooden cork with something that didn’t soak up slight amounts of moisture came from and why it was a good idea.