Widget ball

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Widget ball

Manuel Pata
Para o Bruno e para o Pedro! :p

The cans’ rocket widget ball
A ping-pong ball-like “rocket widget” is added to the product during  
the canning phase at the brewery. The widget ball contains nitrogen  
(N2). When the can is opened, the valve inside the widget is broken  
and nitrogen gas is released into the beer, forming a finely-bubbled,  
beautiful head. The widget ball is found in Kilkenny and Guinness  
beer cans.

Manuel Pata
pata (ate) alface (dote) de

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