Don't make coffee, boiling water will make it bitter, and pay attention to the temperature of water below 96 degrees Celsius. It's best not to heat the coffee again. When brewing, you should pay attention to only cooking the required amount at a time, and it is best to drink it just after cooking. The best drinking temperature of coffee is 85 degrees Celsius.
Coffee contains about 100 different substances, including caffeine, tannic acid, oil and nitrogen compounds. Coffee is a stimulant and has many effects on human body. It can induce diuresis, stimulate the central nervous system and respiratory system, dilate blood vessels, accelerate the heartbeat, enhance the strength of striated muscles and relieve brain and muscle fatigue.
Extended data:
98% of a cup of coffee comes from water, so the most critical factor to determine whether this cup of coffee is good or not is the water quality.
Water quality can be divided into "soft" and "hard". The hardness of water refers to the content of salts dissolved in water, which is generally based on the content of calcium and magnesium salts. The greater the content, the greater the hardness. Generally, the water discharged from the faucet is hard and the taste will be poor. When water is boiled, the hardness will decrease a little. And like the pure water we usually drink, the hardness is almost zero.
Generally, magnesium contained in hard water is particularly sticky. If the water contains a lot of magnesium, it will make the coffee taste stronger and the caffeine content higher. At the same time, hard water also contains more carbonate, which may be the source of more bitter taste of coffee.
In contrast, soft water often contains a lot of sodium, but it is not sticky, which means that using "hard water" with more magnesium instead of "soft water" to brew exactly the same coffee beans will make the coffee brewed with "hard water" taste stronger. Therefore, it is not recommended to brew coffee with distilled water or pure water, because the coffee brewed with this kind of water quality often tastes dull and lacks layering.
People's Network-Are you drinking right? Should coffee be brewed like this? Lemonade should be soaked like this.
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