When opening a bottle of cooking oil, it’s normal to remove a small piece inside the cap before using it. However, you should never throw away that little disc or ring — often referred to as the “coin.” It actually has a very important and ingenious function.
Let’s discover what this overlooked piece is really for.
What Is the Coin Inside the Cap?
Most people are used to opening oil bottles, removing the coin-like seal, and throwing it straight into the trash. But that habit means missing out on a helpful feature built right into the packaging.
The piece we’re talking about is the small plastic ring or disc that seals the bottle under the cap before first use. It might seem like just another disposable part of the packaging, but it serves a real purpose.
Why You Should Keep It
