There is a possibility that how to pour Guinness beer you drink is wrong

"Guinness beer" is generally poured into tulip type glass, but in fact it is not optimal to drink Guinness beer as a tulip type glass, but as a researcher said, "The most suitable way to drink Guinness beer We are exploring from mathematical expressions.

You've Been Pouring Guinness All Wrong - YouTube


When ordering Guinness beer with pubs and bars, some people may have noticed that beer bubbles are sinking rather than floating, unlike other beers. But this is not Guinness beer contradicting the laws of physics.


Since Guinness beer has different characteristics from the others, it is poured into custom glasses. Although it seems that the meaning of improving the performance is put in this, it is said that it takes time to be in the best condition for drinking after pouring beer on the other hand.


Guinness beer "stout"Using roasted barley, a kind called"Top fermentationIt is brewed in. According to William Lee, an industrial mathematics professor who discovered the problem of traditional Guinness beer glasses, Guinness beer's bubbles are very small.


One of the reasons for this is that many beers use carbon dioxide, whereas bubbles contained in Guinness beer use nitrogen.


The silky texture of a stout like Guinesses is due to the use of nitrogen.


Because the bubbles of carbon dioxide are large, it rises difficultly under the influence of water flow. However, because the nitrogen bubbles are small, they move in the same direction as the water flow.


Lee and his colleagues explored the causes of the mysterious movement of Guinness's bubbles using various formulas.


And I found out that the cause of the motion is in the form of a glass.


When bubbles rise from the bottom of the glass, the bubbles move to avoid tilting the glasses. And as bubbles leave, the density of beer near the glass will increase with that. As high-density sinks, beer near the glass bubbles and sinks.


At this time, small bubbles are drunk and sinked by the water flow, so smooth and magical bubble movement unique to Guinness beer is born.


When Guinness is offered at a shop, the process is decided. Using a fixed glass ... ....


The pouring angle is 45 degrees.


Pour beer at a stretch until the 15 to 20 mm swell from the top of the glass.


Wait 90 to 120 seconds after placing it on the table, and separate liquid and foam. By the way, it is a familiar anecdote among Guinness drinks that Guinness' s advertising campaign "It takes 119.53 seconds to perfectly pour 1 pint", meaning this waiting time is meaningful.


At this time, the time to completely separate the Guinness beer liquid and the foam is longer than normal beer, so if you order Guinness Beer you will have to wait a long time.


As the saying goes "Good things come to those who wait." (Good things come to those who wait), Guinness beers only come to those waiting.


According to Mr. Lee's research, most of the reasons for creating "waiting time" are glasses for Guinness beer, although some people think that the flow of liquid at the time of pouring beer creates "waiting time" It is said to be in a special form of.


So what about how to make the Guinness beer's bubbles settle quickly and become ready for drinking ... ...


The answer is "use glass for martinis".


Actually poured Guinness beer into martini glass ......


Since a unique flow is not born by the movement of bubbles, the bubbles calm instantly.


Although it looks a little unusual, if you are not putting any emphasis on 'tradition' by marketing and you want to drink beer as soon as you like it would be better to order Guinness beer with a larger martini glass.