Coffee trees are native to the plateau area in southwest Ethiopia, Africa. It is said that more than a thousand years ago, a shepherd found that sheep ate a plant, became very excited and lively, and then discovered coffee. It is also said that a coffee forest was accidentally burned by wildfire, and the smell of barbecue coffee attracted the attention of the surrounding residents.

Local aborigines often grind the fruit of coffee tree, then mix it with animal fat and knead it into many spherical balls. These indigenous tribes regard these coffee balls as precious food for soldiers who are about to go out. It was not until 1 1 century or so that people began to use brewed coffee as a drink.

/kloc-In the 3rd century, Ethiopian troops invaded Yemen and brought coffee to the Arab world. Because Islam forbids believers to drink alcohol, some religious people think that this kind of drink stimulates the nerves and violates the teachings. There was a time when coffee shops were banned and closed, but the Sultan of Egypt thought that coffee did not violate the teachings, so the ban was lifted and coffee drinks quickly became popular in the Arab region.

The word coffee comes from Arabic Qahwa, which means "plant drink", and later spread to Turkey, becoming the source of this word in European languages. Arabs have also gradually improved the cultivation and production methods of coffee.

Extended data

First of all, the benefits of drinking coffee

Coffee beans contain about 100 different substances, including caffeine, tannic acid, oil and nitrogen compounds. Every100g of instant coffee contains 44 ~100g of caffeine; Every 100g of brewed coffee contains 64 ~ 124mg of caffeine. 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.

Second, the disadvantages of drinking coffee

1, people who are used to drinking a lot of coffee stop drinking coffee, and they will have symptoms such as headache, irritability, muscle tension and nervousness, and the symptoms will disappear after taking caffeine.

2. Women during pregnancy and lactation should drink coffee in moderation, because caffeine will penetrate into the placenta and appear in breast milk.

3, drinking coffee will cause people's mental excitement, and caffeine will affect sleep within 4 hours after drinking coffee.

Baidu Encyclopedia-Coffee (one of the three largest drinks in the world)