How The Foam On Your Beer Keeps It From Spilling
A new study explains how your beer’s foamy top helps it from spilling, by clinging to the glass.
By Mairyn Chorney on Sep. 16, 2016
Ever wondered why you need razor sharp concentration when holding a cup of coffee or tea so it doesn’t spill over but you can walk across a crowded bar without spilling any of your beer on your hands?
Researchers from the Massachusetts Institute of Technology and École Polytechnique Fédérale de Lausanne in Switzerland wondered too and gave us an answer.
It all comes down to foam and capillary forces. Capillary action is the force that describes how droplets can form and how the surface of a liquid adheres to the side of a container.
When it comes to your beer, the foam clings to the sides of the cup and it doesn’t allow the beer to travel as far up the glass as a normal foam-free drink would. It’s the surface tension of the many tiny bubbles at the top of your beer that cling to the glass and provide a shield to movements.
The foam doesn’t have to be thick — even foam only five bubbles thick will have a measurable effect. But the thicker the foam the better at preventing spillage. Brews like Guinness would often be the least spillable beer at the bar.
Shared from American Institute of Physics; read the full story here.
Beer Styles 201: Gruit Beer (Ancient Herbed/Spiced Ale)
Gruit like fruit can be added to ales to change their flavour profiles. Learn more about this ancient beer style.
10 Beer Names You Might Be Saying Wrong
Sometimes you just start a habit and it sticks, so make sure you are saying the names of these beers correctly and avoid an embarrassing craft beer faux pas when out at the bar.
How To Introduce Your Mom To Craft Beer
This really could be about how to introduce anyone you love to craft beer, but since Mother’s Day is coming up we thought we’d focus on mothers.
Beer Styles 201 – Amber and Dark Ales
These ales are brewed in the US, Ireland and England. Sometimes seen as the predecessor to Porter style beers. Their complex malt character, pronounced bitterness and strong hops flavour makes them great for grilling season.