Watched the vid and still can’t figure out how this is done
The beer is obviously coming up at high speed from the bottom of what looks like a regular plastic cup, but it’s got to come up through a hole, and that hole has to immediately seal itself or the beer will all fall out the bottom. My first thought was that each cup was placed over a sealing bottom “lid”, but that would be a two-step procedure for each cup ‘poured’. I can’t figure how a hole at the bottom of each cup would seal itself, OR how the beer would stay put inside each cup for long enough even for it to be placed in a second or two onto a separate ‘underlid’ that would seal it effectively.
“The key is the use of a cup that features a hole at the bottom and small, circular magnet that rests over it. When placed on the system, the magnet is lifted up by the pressure-driven beer. The cup fills up until the weight of the liquid pushes the magnet back down over the hole. The cup can then be lifted off and the beer consumed as normal.”
a magnetic diaphram opens when pressure is applied from the bottom and automatically closes when the pressure of the beer achieves its proper weight in ounces.
Plastic cup, two magnets. One magnet is like a washer, the other a full circle. The washer magnet is attached to the cup, with the hole going through the cup. The circular magnet covers the washer, sealing the hole. As the beer starts up, the circular magnet rises because of the pressure. As the cup fills, the beer will cover the circular magnet until the pressure is great enough to push the circular magnet back down to re-engage the bottom washer magnet. Resealing the cup. I think. :-)