Now there is an ingenious way to get the perfect head on a beer by pouring it from the bottom up. How the system works, is with plastic cup, and a magnet which fills the hole at the bottom of the glass. When you remove the glass from the tap, it pulls the magnet to the bottom of the glass, and with the pressure from the liquid, the magnet stays in place, sealing the glass. The method reduces waste and fills the cup in seconds. Only drawback is drinking beer out of plastic cups.

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