How can consumers distinguish the quality of beer in hot summer

In the hot summer, a glass of beer is undoubtedly a very good choice. But for the majority of beer lovers, how to judge the quality of beer is not particularly clear.
Beer is made from wheat sprouts 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. Beer 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 generate a lot of heat in the body, so beer is often called "liquid bread".

To judge the quality of a bottle of beer, there are mainly the following aspects:

See date
Check whether the beer has exceeded its shelf life. When the beer expires, the quality will decrease, and it will not even be continuous.

Look at color, transparency and foam
Pour the beer into a clean, dry, colorless and transparent glass. Light yellow beer should be slightly greenish golden yellow, not dark; yellow beer should be light yellow or light yellow with green, lighter color is preferred, not dark brown;
Stout should be black-red or black-brown, not black, light red or brown. But all require the liquor to be clear and transparent, with light, no suspended matter and sediment.
For high-quality beer, the height of the foam that rises when poured into the cup should not be as low as 3 cm, and the foam is white and delicate, and can last for less than 4 to 5 minutes before disappearing. Inferior quality beer, the height of the foam rise is low, the foam is slightly yellow, thicker, not long-lasting, or no foam, spray foam. Some people think that spray foam is a good wine, but it is actually a disease manifestation. The original prisoner of foaming and frothing is that the barley used for brewing beer gets damp and grows many molds. Among them, Rhizopus and Streptomyces produce belly-like substances, which can easily cause beer frothing.

Smell flavor

1. High-quality beer should have a distinctive malt fragrance and hop-specific aroma;

2. Inferior beer, the fragrance of malt and hops are not obvious;

3. Inferior quality, often not only without malt and hop aroma, but also with raw wine odor, aging odor and other abnormal aromas.

Taste
Beer should have the smell of carbon dioxide from the liquor and the refreshing bitterness and unique flavor from hops. High-quality beer has a very refreshing sensation in the mouth, without peculiar smell, astringency and other flavors; poorly brewed beer not only tastes flat, but also has bitterness, astringency, and some will have Yeast smell, immature beer smell and other abnormal smells.

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