Source - Geekologie:
Because some people just can’t drink out of a can or bottle, Dutch airline KLM has teamed up with Heineken to start serving tap beer on flights. The problem previously was being able to pour a keg beer without it all being foam due to the low air pressure inside an airplane. *chugging one of mom’s wine coolers* What a time to be alive!
This has been made possible with a special ‘brew lock’ keg that doesn’t affect the taste or form of the beer, when served at an altitude. The special keg is the fruit of years of research and leverages cabin pressure instead of carbon dioxide. Edwin Griffioen from Heineken said, “Because the air pressure is so much lower in an airplane than at sea level, a traditional beer tap will not work as it will only dispense a huge amount of foam.” The contraption is said to be 3D-printed and is rolled around on a trolley.
You know what the real problem with drinking beer on flights is? You drink enough of them and you’re gonna have to go to the bathroom. I don’t like going to the bathroom on airplanes. The only thing I like less than an airplane bathroom is an AIRPORT bathroom. I mean they keep them pretty clean LOOKING but they’re some of the most disgusting SMELLING bathrooms on the planet. I have a theory about this: basically they smell so bad because you have people coming in from all over the country/world with their guts full of crap from all these different places. Basically all these different regional shits come together like Voltron to form some sort of unholy shit smell cacophony. Like I said, it’s just a theory but I’m pretty sure I’m right.