What does a rocket widget do in a Guinness beer?
The rocket widget is essentially an improved version of the ball widget. It still gives the initial burst of brewgas when the bottle is first opened, but the new design gives an additional “squirt” of gas each time the bottle is turned upward, recharging the head each time you take a drink. The result is that you can drink Guinness straight from the bottle, without sacrificing the head and impacting the flavor.
