Ask Real Beer
Why is there a plastic ball in the bottom of a can of Guinness?
From Beer Dave: That ball is what makes the beer in the can taste and pour like
Guinness draught at your local pub. It is not a toy and be careful
those cans are sharp when you rip them apart. (Editor's Note: Since the question was asked Guinness has added a bottle with a "plastic rocket" to its lineup.)
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