Foam: clear mountain streams and streams running water will be splashed with tiny bubbles, but it is difficult to last, the visual impression is not obvious, while the sea water raised foam but the formation of white waves distinctive and long-lasting, the reason is that seawater contains a large number of salts and organic matter, which is mixed with the water to make the composition of foam bubbles toughness, not easy to rupture. The inventor of beer was inspired by nature to add protein thickening agents to the ingredients of beer to make the foam rich and long-lasting, and it usually stays in the glass for two to three minutes.

Pressure: "Shaking the bottle violently before opening the cap will increase the pressure inside the bottle," which is an illusion. Foreign experts have done such an experiment, he was in the bottle filled with warm beer, and with a special cap on the pressure gauge to observe the pressure changes in the shaking, the results show that, no matter how to shake the bottle pressure did not change. Because the amount of carbon dioxide dissolved in beer is fixed, shaking or not the pressure is the same. But the sudden rise in temperature is a major factor in the increase in pressure, which is also a place where extra attention should be paid to storage.

Color: A careful observer will notice that the beer we drink is orange, while the beer in the metal container appears red. The reason why the beer in the glass is orange is because the chemical composition in the beer can absorb most of the spectrum of light, only the orange color can not be absorbed by it, so it can be perceived by our vision. And wine cans and other metal containers of beer orange has disappeared in the bottom of the can deep liquid, only red light can be transmitted from the liquid, air.

Temperature: the optimal drinking temperature is 4 ℃ ~ 6 ℃, frozen will change the flavor.

Pouring: Pouring 300~330 ml of beer into a large glass with a handle is the easiest way to produce bubbles, and the bubbles have an antioxidant effect, so you should drink it all with bubbles. Pouring wine should be divided into two full, from the mouth of the glass 20 centimeters high pouring wine, the first left and right shaking glass, on the way to pause for a moment after half of the foam disappeared and then continue to pour full. Canned beer should not be drunk directly into the mouth, poured in the glass to let go of excess carbon dioxide and then drink can feel softer.

Cups: Drinking beer can only be done in glass. Beer cups can not be washed with other tableware, because the residual grease and detergent ingredients will affect the foam production, and the purpose. After washing alone, but also pay attention to natural drying before use, because after wiping, stained in the cup on the rag fibers will hinder the foam production. The cup is not dry, do not put people in the refrigerator freezer, even if the weak ice film will affect the aroma and flavor.