The Guinness widget is a tiny, plastic ball inside beer cans. During canning, pressurized nitrogen is added to the brew, which trickles into a hole in the widget. Once opened, the widget's ...

Ever wondered why there’s a plastic ball in your can of Guinness? It’s not just a quirky feature—it’s brilliant beer science. In this video, see how this tiny device, called a widget, recreates the ...

In the past few decades, Guinness revolutionized both draft beer systems and how stouts are canned. The key? Nitrogen, and a modified ping pong ball. Amelia Schwartz is a Brooklyn-based writer and ...