Here's why there's a weird plastic ball in a can of Guinness

[lsanderson]

Here's why there's a weird plastic ball in a can of Guinness

Nitrogen! It's not just for tires!

Comments

[geometrician.livejournal.com]

When these first came out years ago, I tried one of the new ones alongside one of the old ones, and couldn't tell the difference. I did notice that they came in smaller containers, though.