A simple way to check if the beer you drink is dirty or not

A small trick to know if the beer you are drinking still has dirty foam on the inside.

How to check the cleanliness of the beer mug

There are so many great beer shops, many craft beers, a nice row of veranda, along with an attractive second night of music. But, with a huge number of customers coming to the beer shops, we can't help but ask: "Are the beer glasses served?"

Fortunately, there is a very simple way to identify this. Basically, if your beer is not very clean. then this will happen: bubbles will appear from the side of the cup.

There is nothing wrong when you want to enjoy a delicious beer.

Come here, you probably will find it strange, because, which beer has no foam? But the problem is, where does the bubble come from?If they come from the cup, it is almost certain that your cup is not clean.

Here it is: The dirt still clinging to the cup will create rough spots on the inside of the cup. The gas available in beer - mainly CO ₂ - will cling to these positions, to form air bubbles. This makes beer more bubbling.

Something like a dirty cup looks like this.

For beer as well as regular carbonated drinks, when bottled under high pressure, the gas will be dissolved inside. When opening the bottle, under normal conditions, the gas will form air bubbles inside the liquid, and create a layer of foam above.

We can accelerate the formation of air bubbles by creating rough spots inside carbonated water. This is why releasing a Mentos tablet into Diet Coke produces so much air bubbles. So much that the pressure inside the bottle is completely changed, causing the bubbles to erupt like an active volcano.

For beer, the upper foam contributes to the feeling of attracting drinkers. Understanding this, many firms have begun to produce beer cups that are laser engraved on the bottom of the cup, thereby making the beer beer more effervescent.

But if this foam layer reappears because of the dirty cup, it is better to ask the seller to exchange for you another beer. There is nothing embarrassing when you want to enjoy a delicious, clean beer.