An curved arrow pointing right. Ever opened a can of Guinness and noticed a strange rattling sound when you shake it? There's a foreign object in there. But, it has a purpose. Produced by Kevin ...

But how would Guinness achieve the same result from stout poured from a can? In 1968, two brewers invented the widget, a ping-pong sized plastic ball that releases nitrogen into the pressurized ...

Ever opened a can of Guinness and noticed a strange rattling sound when you shake it? There's a foreign object in there. But, it has a purpose. Follow Tech Insider: On Facebook More from Science ...

It's hard to beat the experience of having a bartender pour you a draught glass full of Guinness fresh from the tap, but the ...

Have you ever noticed the clink-clank of a tiny object rattling around the inside of an empty Guinness bottle or can? That little ... like a little ping pong ball. During the canning process ...