Guinness

Guinness Draught 3+1

In 1988, Guinness invented a system for serving beer from a can as if it were poured on draught to deliver the perfect Guinness serve to errant knights around the world: the floating widget. When opening the can, the small nitrogen ball at its centre, releases a magic surge of bubbles, to form the distinctive creamy head that people associate with a glass of Guinness.