What is the role of foam in craft beer,Do you want to know?

Craft beer foam is a polymer of bubbles separated from each other by a thin liquid film, and each bubble is surrounded by a film of beer substance. When you take a sip of beer, the foam should leave traces on the wall of the glass after the foam drops. This phenomenon is often called the "Irish belt" or "Brussels belt".

Cheers in the hot summer

Its foam has the following functions:

• The foam in beer can soften the bitterness of hops and the irritation of alcohol.

• The foam can isolate the direct contact between the air and the beer, thereby reducing the oxidation of the beer and helping to prevent the generation of bad smells.

• The foam can maintain the taste of beer, that is, the tingling sensation after carbon dioxide contacts the oral mucosa and tongue surface. This taste is one of the important indicators for evaluating beer quality.

When high-quality beer is poured into the cup, the foam can rise from the cup and last for more than five minutes, and the foam is delicate, white, wall-hanging, and the foam is persistent and delicate, long-lasting, and has a mellow taste. The quality of beer is good. The stability of the bubble is related to the surface tension of the liquid, and the tension is related to the temperature. According to experiments, the foam of beer is the highest at 10°C-12°C, and it is long-lasting and has the best taste.

• The foam in the beer can make the beer cool and refreshing, dissipate heat and relieve heat. Because the foam is triggered by the carbon dioxide in the beer. After the carbon dioxide enters the stomach, it expands when exposed to heat and is expelled from the body through hiccups, thereby taking away part of the body heat and achieving the effect of dissipating heat and relieving heat.

In Japan, the most common method of pouring alcohol is to pour the alcohol vertically. When the foam of the beer liquid in the glass is about 1/3 of the height, it is poured against the wall of the glass instead. In this way, the alcohol and foam The ratio can be maintained at 7 to 3. In Germany, drinkers seem to like creamy foam with a foam to wine ratio of about 5 to 5. However, in the UK, Australia and other places, people prefer to keep only a thin layer of foam on the surface of the beer.

Beer with bubbles

Beer is made from wheat malt and barley malt as the main raw materials, adding hops, liquid gelatinization and saccharification, and then liquid fermentation. Its alcohol content is low, contains carbon dioxide, and is rich in nutrients. It contains a variety of amino acids, vitamins, low molecular weight sugars, inorganic salts and various enzymes. These nutrients are easily absorbed and utilized by the human body. The low-molecular sugars and amino acids in beer are easily digested and absorbed, and produce a lot of heat in the body, so beer is often called "liquid bread".

It is indeed a commendable thing to drink beer brewed by yourself in the summer hot days. We are also willing to provide some guidance on the equipment and brewing you need. Below is the brewery jar, if you need it, please contact

600L craft brewery equipment ready for sale

Provided by DEGONG Alice

dgequipment@degonget.com