The shepherd found coffee? The second largest traded product in the world? How many rumors do you know about coffee?

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In this era of information explosion with false news and out-of-date information, it is sometimes difficult for us to know what is true and what is false. Today, let's talk about the five most popular "rumors" in the coffee industry.

There are many high-end stories about the origin and efficacy of coffee, which most of us believe all the time. However, you still have the right to know the truth of the story.

1. The first person to find coffee was the shepherd Caldy!

The origin of coffee has been debated again and again, but one of the most common stories is the goat herdsman Caldi. It is about more than a thousand years ago in Ethiopia (Ethiopia), there was a shepherd named Kaldi. One day, after herding sheep and grazing, Caldy picked up his wooden flute and began to play in a moment of boredom. I don't know how long later he looked up and realized that all his sheep had disappeared! In panic, he looked everywhere for the goat while playing his flute. He found the sheep in a bush, but just then he saw the strangest experience he had ever seen: the goat was dancing!

At first Caldy thought his goats were possessed, but when he stopped to observe carefully, he was surprised to find that they had grabbed some red fruit from a green bush to eat. Curious himself, he also ate these red beans, but unexpectedly, after eating them, he began to dance with the goat. His happy dancing figure was seen by an Islamic priest, who asked him what had happened, and Caldi told his secret.

Although many people think that this romantic story about the origin of coffee is true, because it is consistent with the general view that coffee originated in Ethiopia. But there is actually no conclusive evidence to support it. In fact, Caldy may not be alone, but one of the countless people living in Esther at the time. There are similar coffee legends everywhere, not far from Caldi's version, and some people even think that coffee originated in Yemen.

two。 Coffee is the second largest traded commodity in the world after oil!

Many people claim that coffee is the second most traded commodity in the world, including the public policy director of Starbucks. However, the coffee trade cannot be compared with the oil trade and the metal trade, if it is based on the size of the global trade market.

Coffee and raw beans are packed in 60kg bags, while crude oil is in barrels, which is difficult to compare in terms of packaging or volume, and should be measured by the total value of export transactions. According to the 2015 data of the United Nations Trade Statistics Organization, crude oil trading volume reached 788 billion US dollars, making it the most traded commodity in the world, while metal commodities were also among the top traded volume: ── aluminum trading volume reached 100.6 billion US dollars, copper reached 100.4 billion US dollars, iron ore also had 67 billion US dollars. However, according to the United Nations, it is difficult to see the exact trading volume of raw coffee beans, because the statistics re-count other secondary processed products containing coffee powder, which are not accurate.

Referring to the data of the International Coffee Organization (ICO) and the World Bank, it is calculated that the global trading volume of raw coffee beans reached 19 billion US dollars in 2015, which is far from the hundreds of billions of US dollars traded in crude oil and metal commodities that year, and coffee does not enter the second largest commodity list. In addition, according to the International Institute for Sustainable Management (International Institute for Sustainable Development) in 2014, the global trading volume of raw coffee beans reached US $23 billion and was not in the back seat of the second-largest commodity.

Coffee may have been one of the best-selling items in the 1970s, but it's obviously not anymore.

3. Coffee beans should be stored in the refrigerator to extend the shelf life!

Although after years of earnest teaching, many people have realized the disadvantages of storing coffee beans in refrigerators, it is a pity that today some coffee bean bags can still find the suggestion of "refrigerate and keep them fresh before they are used up." In fact, generally speaking. Storage in the refrigerator will do more harm than good to the quality and lifespan of coffee beans. When raw coffee beans come out of the oven at a temperature close to 200℃, they lose most of their moisture and become fluffy and porous, making it easy to absorb water from the outside world. If you open the package and put it in the refrigerator at this time, there is no doubt that coffee beans will be used as a flavor absorbent and dehumidifier.

Even if it is sealed storage, every time you open the sealed package during daily use, it will cause the coffee beans to produce condensate due to low temperature, so that the flavor of your coffee beans will be extracted before they are actually brewed. The best way to store coffee beans is in a cool, dry, dark place.

4. Coffee can cure a hangover!

Maybe we've all tried to get drunk on a crazy night and then wake up the next day with dizziness. Did you first think of having a cup of coffee to wake you up? Although you will feel much better after drinking coffee, we have to regret to say that drinking coffee is not necessarily effective in treating hangovers. Caffeine can temporarily mask fatigue and depleted energy levels, but it doesn't wake you up because caffeine doesn't reverse or change alcohol levels in your blood.

Moreover, a hangover is usually the result of extreme dehydration of your body. Unfortunately, the stronger the coffee, the more unable to solve the problem, but may aggravate it! In fact, as long as you eat a lot of water or water-rich food.

5. The more roasted the coffee beans, the stronger the coffee!

The last one, but not the most important one: it is generally assumed that the deeper and blacker the beans are roasted, the stronger the coffee will be and the better the refreshing effect will be. However, modern science has verified many times that although there is a slight difference in caffeine content between light-roasted and deep-roasted coffee beans, since caffeine remains stable throughout the roasting process (the melting point of caffeine is around 238 ℃, the boiling point is higher), the temperature of roasted beans must exceed 315 ℃ for significant differences to occur. But when actually roasting coffee, there are rarely more than 240℃ (unless you're not afraid your roaster is on fire), so you can't feel any significant changes in caffeine in coffee beans at different roasting levels.

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