Is beer a carbonated drink?

No

Interpretations of some terms about beer:

When Beer Cloud opens the beer taken out from the refrigerator, you will hear a chirping sound and smoke at the same time. A puff of white smoke comes out, which is the beer cloud. In fact, the so-called beer cloud is not a cloud either. It turns out that the carbon dioxide in beer is dissolved under pressure, and the pressure inside can reach 2 to 3 kilograms per square centimeter. When the bottle cap is opened, the balance between the upper and lower liquid levels is destroyed, and the gas at the neck of the bottle rushes out immediately. These gas molecules Rapid movement consumes energy, causing the temperature of the beer to suddenly drop from 9°C to -1°C in only 0.1 seconds. The instantaneous cooling causes the steam in the bottleneck to condense into small water droplets, like wisps of white cloud smoke emerging from the mouth of the bottle.

The running water of mountain streams with clear foam will splash fine foam, but it is difficult to last and the visual impression is not obvious. However, the foam raised by sea water forms white waves that are bright and long-lasting. The reason is that sea water It contains a large amount of salt and organic matter. When mixed with water, the bubbles that make up the foam become tougher and less likely to burst. The inventor of beer was inspired by nature and added a protein thickening agent to the beer ingredients to make the foam rich and long-lasting, which can usually stay in the cup for two or three minutes.

Pressure Shaking the bottle cap vigorously before opening it will increase the pressure inside the bottle. This is a misconception among people. Some foreign experts have done such an experiment. He filled a wine bottle with warm beer and used a pressure gauge on a special bottle cap to observe the pressure changes during shaking. The results showed that the pressure in the large bottle did not change no matter how much it was used. Because the amount of carbon dioxide dissolved in beer is fixed, the pressure is the same whether it is shaken or not. The sudden rise in temperature is a major factor in the increase in pressure, and this is something that requires special attention in storage.

Those who are careful about the color will find that the beer we drink is orange, while the beer in the metal container appears red. The reason why the beer in the cup is orange is because the chemical components in the beer can absorb most of the light spectrum, but the orange color cannot be absorbed by it, so it can be felt by our eyes. The orange color of beer in metal containers such as wine cans has disappeared into the depths of the wine liquid at the bottom of the can, and only red light can be transmitted from the wine liquid and the air.

The optimal drinking temperature is 4℃~6℃. The taste will change after freezing.

Pour 300 to 330 ml of beer into a large cup with a handle, which is the easiest way to foam. The foam has anti-oxidation effect, so you should drink it with the foam. When pouring wine, you should fill it up in two steps. Pour the wine from a height of 20 centimeters from the mouth of the cup. First, shake the glass from side to side. Pause for a moment on the way and then continue filling it after half of the foam disappears. It is not advisable to drink canned beer directly to your mouth. Pour it into a glass to release the excess carbon dioxide and then drink it to make it feel softer.

Only glass cups can be used to drink beer. Beer glasses cannot be washed together with other tableware, because the residual grease and detergent ingredients will affect the generation of foam, and the purpose. After washing alone, be sure to let it dry naturally before using it again, because after wiping, the rag fibers stained on the cup will prevent the generation of foam. Do not put wet cups in the freezer of the refrigerator. Even a weak ice film will affect the aroma and taste.

The most important thing to avoid when storing beer is light, and canned beer is no exception, otherwise it will deteriorate within two or three days. When storing beer for a short period of time at home, it should be placed in the refrigerator or a stable room temperature environment below 25°C.