I’ve always thrown away the oil cap – a colleague explained to me what it was actually used for

It’s common that when opening a new bottle of oil, the first thing we do is throw away the small plastic cap that sits in the opening. For many, this cap seems to be a simple obstacle that makes it difficult to pour the oil, and the quick solution is to remove it and throw it away.
However, if you thought this cap was useless, you’re wrong. It turns out that it has a specific and practical function that most people don’t know about. Here’s how you can use it correctly to improve your cooking experience.