Why There's a Plastic Ball in Guinness Cans, How Nitrogen Widget Works
Ever wonder what the ball inside a can of Guinness looks like? : r/mildlyinteresting
Why Is There A Plastic Ball In Guinness Cans? - DrinksFeed
Guinness Draught beer in can with ball - dark beers | Casillowine.com online Shop
What happened?? Just opened and poured my Guinness and no foamy head and taste aweful. I'm guessing that nitrogen ball in the can didn't puncture when I popped the top??? I can
Why Is There A Plastic Ball In Guinness Beer Cans? – ExpertBrewing.com