She shares a m.
Marble in guinness can.
The widget is a plastic nitrogen filled sphere with a tiny hole in it.
The purpose of the widget is to release the co 2 from some of the beer in the can to create the head.
Guinness skilful pairing of nitrogen gas and carbon dioxide to create a perfectly balanced stout.
Guinness brewers first patented the idea of the widget in 1969 but it wasn t until 20 years later in 1989 when they released their first generation widget which was a flattened sphere that sat.
Because a beer like guinness contains less dissolved co 2 if you poured it from a can with no widget the head not be very thick because most of the co 2 would stay dissolved.
It was patented in british patent no 1266351 filed 27 january 1969 with a complete specification published 8 march 1972.
In 1969 two guinness brewers at guinness s st james s gate brewery in dublin tony carey and sammy hildebrand developed a system for producing draught type guinness from cans or bottles through the discharge of gas from an internal compartment.
Guinness draught in a can what s the secret to making a beer that s rich and creamy with a smooth velvety texture.
11 2011 youtube user jack deal posted a video about a curious ping pong sized ball floating in his can of guinness draught.
The answer is nitrogenisation.
Marble is commonly used for sculpture and as a building material.