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Why can't coffee be made for too long? The right way to make coffee

Why can't coffee be made for too long? The right way to make coffee

4hw.com.cn: why can't you make coffee too long? It's very common to make your own coffee. You can enjoy the real coffee at home and in the office. But do you know the reason why the coffee making time can't be too long? Here is the knowledge about coffee making compiled by sihai.com. I hope it will be useful to you!

Why not make coffee for too long

Because boiling bubbles carry some aromatic substances and gather on the surface of coffee to form foam. The aroma of coffee depends on the density of the foam. After boiling, the coffee will continue to boil, which will destroy the foam and make the aromatic substances run away with the steam.

Avoid too high concentration of coffee

After drinking high concentration coffee, the adrenaline in the body suddenly increases, resulting in the acceleration of heart rate, the obvious rise of blood pressure, and the occurrence of nervous, restless, tinnitus, and limb involuntary tremor and other abnormal phenomena.

In the long run, it will affect health.

Don't put too much sugar in coffee

If put too much sugar, people will be listless after drinking, even feel very tired.

This is because too much sugar in coffee can reflexively stimulate the islet cells in the pancreas to secrete a large amount of insulin, which can reduce the glucose content in the blood.

Once the blood sugar is too low, there will be palpitation, dizziness, weakness of limbs, drowsiness and other hypoglycemia symptoms.

In addition, when drinking coffee, it is not appropriate to eat too much cake, candy and other high sugar food, otherwise the above phenomenon will also occur.

It's better to make coffee at home

1. Three steps to make coffee

Select & rarr; baked & rarr; boiled beans.

2. Pay attention to making coffee at home

① , the fineness of coffee grinding is determined by the coffee equipment you choose, because different coffee making methods need different grinding fineness. ② Use 92 & deg; C ~ 96 & deg; C water.

3. Use of small funnel

① Put a piece of filter paper on the inner side of the funnel, and put a cup of coffee powder (8-10) into the filter paper bag to avoid coffee entering the interlayer between the filter paper and the funnel. ② Soak the coffee powder with water of proper temperature. ③ Add water later, and slowly add the water to avoid the water level higher than the filter paper edge to make the coffee dregs into the coffee. Until a good cup of coffee.

4. Electric drip coffee machine

Before making coffee every day, preheat the coffee machine, add half a pot of water into the sink, and turn on the power; first, push out the fresh water in the appliance. Second, clean all pipes of boiler and cooking system. Third, clean the coffee making funnel. Fourth, preheat the coffee pot. Place a piece of matched filter paper in the funnel of the coffee machine, put 7-9g coffee powder into the filter paper according to each cup (be careful that the coffee powder enters the filter paper and the funnel avoiding interlayer), and close the funnel door. Add 175ml of each cup into the water tank and turn on the power.

5. Coffee maker

This is a traditional soaking method. The coffee powder and the coffee liquid are in the same container. This method can taste the advantages and disadvantages of coffee.

Method: put the coffee powder matching the thickness of the press pot into the pot according to the amount of one cup (880g), but it can't exceed the limit of the coffee pot. Pour 91 & deg; C ~ 96 ~ & deg; C water into the pot until the top of the metal frame outside the coffee pot, put the filter rod in place, soak it for 3 minutes, then push the filter screen to the bottom, and a pot of good coffee is ready.

Benefits of coffee

1. Coffee is good for the skin

Coffee can accelerate the metabolism of the skin, accelerate the elimination of waste horniness, and fade the dark circles caused by poor circulation; in addition, it is anti-oxidation. Regular drinking of coffee can keep skin cells full of vitality, prevent cell oxidation, and have a great effect on anti-aging.

2. Drinking coffee can prevent radiation damage

Radiation injury has become a more prominent pollution and harm. Especially the radiation of household appliances: people who operate computers for a long time, microwave ovens and TV sets at home, etc. Especially the radiation to pregnant women (pregnant women's food) has affected the health of the next generation (healthy food). Studies do show that coffee may help prevent radiation damage.

3. Coffee can cure wine

Chlorogenic acid in coffee can avoid alcoholism. Drinking coffee after drinking alcohol will make acetaldehyde, which is transformed from alcohol, oxidize rapidly, decompose into water and carbon dioxide, and discharge out of the body.

4. Drinking coffee can prevent cancer and fight cancer

The polyphenols in coffee are a strong antioxidant. Drink some coffee every day, it has certain effect on preventing cancer and fighting cancer. Women who drank more than three cups of caffeinated coffee a day had a 21 percent lower risk of basal cell cancer than those who drank less than one cup a month. Caffeine can also inhibit tumor growth. If women drink 4 to 6 cups of coffee a day, the incidence rate of breast cancer will be reduced by 25% - 70%, even if there is a family history of breast cancer. This is because coffee can reduce the production of carcinogenic estrogen.

5. Drinking coffee can relieve sports pain

Drinking two cups of coffee after exercise will help relieve muscle soreness. Drinking coffee can help people relieve muscle pain caused by excessive exercise, according to a study. Although caffeine has the effect of alleviating exercise pain, it is often only effective for people who don't drink coffee often.