Chinese name: black coffee mbth: black coffee efficacy: beauty, blood circulation, diuresis, refreshing raw materials: coffee bean pinyin: He and Kā Fe and their production methods, beverage varieties, flavors, raw materials, health care efficacy, efficacy comparison, healthy drinking methods, benefits of black coffee, weight loss methods, production methods There are three production methods of black coffee, so there are three different coffee pots: traditional filter type and traditional filter type. Traditional filters are the most primitive and simple tools. The coffee pot consists of a funnel, a filter paper and the container below, but it requires high manual technology. If you grasp it properly, you can cook the best coffee with mellow taste. This kind of pot is very cheap, you can buy it for more than ten yuan. The brewed coffee pot is suitable for people who drink coffee, with stable hand feel and sharp taste. It is important to pay attention to whether it is a three-hole or a one-hole coffee set. The dripping speed of three holes is faster, the extraction time is shorter, the coffee is lighter, and the opposite is true of one hole. Siphon uses the siphon principle. Under the burning of alcohol, when the water temperature in the lower container reaches 92℃, the water flow is sucked into the upper container together with the coffee powder. After soaking and stirring, the coffee returns to its original way. Due to the addition of a stirring process, this method of black coffee has a strong flavor, but it is relatively simple because it does not require manual skills. The market price of this coffee pot is mostly one or two hundred yuan. The price of electric coffee pot is comparable to that of siphon coffee pot. It uses electricity to boil water and then soaks it. This is the easiest way to make black coffee, but because it is made with boiling water, it tastes slightly inferior. Comparatively speaking, the electric coffee pot is more suitable for young people with petty bourgeoisie who are afraid of trouble. The price of common electric coffee pots ranges from one hundred yuan to three or five hundred yuan. Although the traditional filter type is the simplest, it is the coffee pot that can best cook the original flavor of coffee; In the production process, it is necessary to accurately grasp the water temperature, water flow size and trajectory. Uniform water flow and circular trajectory can make coffee taste natural, so it is very important to choose and control the kettle when pouring water with both hands. When the water comes into contact with coffee, it should be as round as possible, from outside to inside and from inside to outside, so that coffee can fully contact with the water; At the same time, the water temperature of 92℃ can make the aroma, alcohol, sweetness, acidity and bitterness of coffee uniform and rich. If the water temperature is too high, it will burn the coffee and make the taste sour and astringent. On the low side, it is difficult to brew the aroma of coffee. Beverage variety flavor black coffee emphasizes the aroma of coffee itself. Aroma is the life of coffee quality, which can best express the making process and baking technology of coffee. The climate, variety, refining treatment, harvesting, storage and baking technology of the consuming country are all conditions that determine the aroma of coffee beans. Bitterness is the basic taste of black coffee, and its strength and texture are different. Raw beans only contain a very small amount of bitter ingredients, and then the most symbolic bitter taste of coffee is produced by caramelization and carbonization of sugar, starch and fiber caused by baking. Black coffee also has a sour taste. Proper heating will produce moderate acidity, which will make coffee taste better and make people feel deeper. The sweetness of black coffee is closely related to the bitterness, so refreshing and superior black coffee tastes sweet. Raw coffee beans are the raw material of black coffee. There are hundreds of kinds of coffee beans, and the price varies according to the variety, origin and grade. We are familiar with Yunnan coffee, Blue Mountain, Mantening, Huju, Brazil and charcoal, which can be bought in many supermarkets, and most of them are baked beans. Due to different producing areas, the characteristics of coffee beans are different, some of which are darker in color, higher in baking degree and stronger in taste; Some are lighter in color and slightly lighter in taste. Experts choose coffee, mostly by grabbing a handful of coffee beans to see whether the color of each bean is consistent and whether the particle size and shape are similar, so as to avoid buying inferior products disguised as mixed beans. In addition, if the baked beans are oily, it means that they have gone bad, not only the mellow degree is reduced, but also the astringency and sour taste will appear. Health effect Black coffee has diuretic effect. Black coffee can also promote cardiovascular circulation. For women, black coffee also has a cosmetic effect. Drinking it often can make you radiant and radiant. Black coffee has always been called "the messenger of health", and its impact on health is as follows: 1. Black coffee refreshes the mind: Caffeine * * * central nervous system can make the mind more sober, have abundant thinking ability, pay attention to concentration and improve work efficiency; 1. Strengthening bones and muscles, benefiting waist and knees: Caffeine can make muscles contract freely and improve motor function. 3. Appetizing and promoting digestion: Caffeine secretes gastric acid in gastrointestinal tract, which can promote intestinal peristalsis, help digestion, prevent gastroptosis, and has a rapid laxative effect. 4. Liqiao Qushi: Caffeine can promote renal function, discharge excess sodium ions in the body, increase urine output and improve abdominal distension and edema. 5. Promoting blood circulation and removing blood stasis: Linoleic acid contained in coffee has the functions of hemolysis, preventing thrombosis, enhancing vasoconstriction, relieving migraine and reducing the probability of stroke. Pingfei Dingchuan: Caffeine can inhibit parasympathetic nerve and reduce the attack of asthma. ⒎ Dehumidification: Caffeine contains tannic acid, which has a strong adsorption capacity for taste. ⒏ Weight loss effect: Drinking coffee will lose weight, and the best time to take it is 30 minutes after lunch to 1 hour and before going to work, and tasting a cup of rich sugar-free black coffee, combined with walking, can promote fat burning. Black coffee can effectively improve hypotension. Efficacy comparison and plant herbal tea comparison. In daily life, some herbal teas contain mint, hawthorn, rose hips, lotus leaves, etc., which will promote detoxification in the body and let free fat be discharged, thus achieving the effect of detoxification and slimming. Tea is a healthy drink for human beings. As long as it is healthy, keeping slim is healthy. These special effects of herbal tea are a supplement to a lot of flowers and plants, which will certainly make herbal tea help people to be healthier. Black coffee is a very healthy drink. A cup of100g black coffee has only 2.55 kilocalories. So drinking a cup of black coffee after a meal can effectively decompose fat. Drinking caffeine healthily is a central nervous system stimulant, which can accelerate the heartbeat, sweat and promote metabolism. This is also one of the main pharmacological effects of coffee to lose weight. However, if caffeine can inhibit appetite, it is really difficult to see its mechanism. He said that many patients do try to lose weight with black coffee in clinic. Some people drink more than 10 cups of coffee a day, and the result is not only gastric ulcer, but also insomnia and anxiety symptoms. Therefore, according to the advice of the Ministry of Health, the daily intake of caffeine should not exceed 300 mg. Drinking black coffee to lose weight is unhealthy. If you really want to use black coffee as a weight loss aid, don't overdo it, but also cooperate with the cause of obesity. For example, people who have slow metabolism, don't sweat much at ordinary times, and have constipation problems can not only improve their metabolism, because caffeine can also excite visceral sympathetic nerves, improve intestinal peristalsis, and sometimes promote defecation. But people who already have ulcers, insomnia or heart problems are not suitable for drinking black coffee. Benefits of black coffee What are the benefits of black coffee? Researchers in the Affiliated Hospital of osaka city university found that drinking more than one cup of freshly brewed coffee every day can improve the liver function of patients with chronic hepatitis C, and the research results were published in the American academic journal PLoS One published on 20 13 1 1. 376 patients aged 20-80 with chronic hepatitis C in osaka city university Affiliated Hospital were investigated for the relationship between the change of ALT enzyme quantity (ALT enzyme quantity will increase with the damage of liver cells, which is usually used as an index of liver function) and the frequency of drinking coffee. The results showed that the ALT enzyme values of patients who drank more than one cup of freshly brewed coffee every day in 1 year were mostly within the normal range compared with patients who did not drink. Moreover, the greater the amount of coffee, the more significant the liver protection effect. The researchers also found that drinking canned coffee drinks, instant coffee and decaffeinated coffee has no corresponding liver protection effect. Coffee is a very good diet food. Coffee can not only be drunk when losing weight, but also has many wonderful effects on losing weight. Although coffee can promote fat metabolism and help to lose weight and burn fat, in fact, the daily coffee consumption should not exceed 10 cup (calculated according to each cup 150ml). Control the amount of coffee you drink. Although coffee can promote fat metabolism and help you lose weight and burn fat, in fact, the amount of coffee you drink every day should not exceed 10 cup, calculated according to each cup 150ml. Excessive caffeine will make the nerve center overexcited, causing insomnia, anxiety and irritability, while excessive alkaline substances will also affect gastric acid secretion, leading to gastrointestinal obstruction, even gastric mucosal damage and gastric ulcer. Therefore, never drink too much coffee. Generally speaking, 2-3 cups a day can meet the needs of a day. Never drink too much coffee. Coffee bean dregs are also valuable. Many people like to drink instant coffee. Instant coffee is made by refining liquid into powder at a very high temperature, so the caffeine content is not high. If possible, I still think I can make my own coffee at home, which not only tastes better and burns fat better, but also can wrap the leftover coffee bean dregs in gauze to take a bath, or rub the swollen and obese parts of my legs. This is also a very good slimming baby, and you can't just throw it away. You can lose weight by drinking coffee at the right time, but you should also find the right time to give full play to the role of caffeine. Expert research shows that when you finish drinking coffee for 40 minutes, the concentration of fatty acids in your blood will rise to the highest, which is the best time to lose weight by exercise, because fatty acids will promote the decomposition of fat and make exercise slimming more effective. Therefore, the time to drink coffee can be placed half an hour before exercise, and the slimming effect will be greatly improved. Find the right way to drink coffee. Not all coffee can lose weight. I emphasize black coffee, which is coffee with a purity of over 75%. But the taste of black coffee is too bitter for many girls. Therefore, ordinary coffee reduces the content of coffee and adds sugar. The weight loss effect of this coffee is naturally not good, and sugar can also lead to obesity. After choosing black coffee, you should also pay attention to the drinking method. Never add condensed milk, sugar cubes or sugar. Sugar substances will affect fat decomposition and increase calories. If you really can't stand the bitter taste, you can add a little sugar-free milk to taste, but don't overdo it. Baking method is very important. The flavor of coffee is mainly determined by the roasting time and temperature of coffee beans, which also determine the caffeine content in the final coffee. Generally speaking, the temperature of roasted coffee beans is 178 degrees, because this temperature can make the flavor of coffee beans completely give off, but it is also the temperature at which caffeine is decomposed. Therefore, although the flavor of deep roasted coffee is very good, the caffeine content is actually very low, so if you want to lose weight, you should choose shallow roasted black coffee. There is a difference between cold drinks and hot drinks. With the development of coffee making technology, from espresso to carbonated drinks, ice cream, milk, and then to ice-cold coffee to adjust the flavor, these composite versions of coffee are favored by many young girls. But in fact, the effect of caffeine can only be best when drinking hot coffee, so you will feel hot after drinking hot coffee for half an hour, which is the result of caffeine promoting blood circulation. In contrast, the efficacy of iced coffee is much weaker, even less than one-third of that of hot coffee.