Whats a Widget?
The widget is the patented device (also called a “smoothifier”) in the special draught-flow can or bottle that contains a small amount of Guinness and nitrogen gas at very high pressure. If you shake one of the cans you can hear it rattle. Why not open a can up and have a look? When the can/bottle is opened, the gas is suddenly released through one (or more) pin-sized holes. This creates a lot of little bubbles.
