Have you ever wondered why there is a plastic ball sitting at the bottom of your empty Guinness can? Turns out it's an ...

Liquid nitrogen, a widget, and the beer itself are added to each can of Guinness before they're sealed. The liquid nitrogen ...

The liquid nitrogen quickly evaporates in the ... and liquid into the widget through its tiny hole, per Guinness. Then, when you open the can, you should hear a "pssshhh" sound.

For the ideal pint of Guinness, you need the nitrogen to break down, creating a velvety, smooth texture. That’s what the widget in the can does: filled with nitrogen, when you pop the top ...

Guinness is known for the minuscule nitrogen bubbles that carbonate the beer and give it a smooth, creamy texture. This is owed to a tiny plastic ball widget inside the can that releases gas when ...