You might have bought a can of Guinness and noticed something rattling around in the can- well its not a set of lost keys or someone’s belongings from the factory it is in fact a widget. A widget you may ask, well this clever little device is inserted in the can to help with the creamy head in your can of Guinness. The widget which is usually a little eyeball sized ball helps release the CO2 within the can when it is opened. The ball contains nitrogen and has a tiny hole which is released when the can is opened creating a rich tasty and creamy head for your enjoyment.
