There is so much science and engineering when it comes to beer that beer seems almost the tip of the iceberg above water while underwater is vast machinery that gets a beer to you the best way possible.
Case in point….
…Firestone Walker and their new Nitro Merlin.
Instead of a widget inside the can as is often used, FW went with drips and drops utilizing a liquid Nitrogen drip machine to release a drop of nitrogen into each can.
The rest is up to you. You will need to “Surge Pour” this Merlin by inverting the can three times to “wake up” the nitrogen then pour that beer hard and true in the center of your glass.