What is decaf coffee? how do decaf beans come from? what are the kinds of decaf coffee?

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It is said that the birth of decaf can be traced back to more than 100 years, but decaf is more mature in recent decades, decaf is to satisfy those who like the mellow taste of coffee, but also afraid that caffeine will harm their health. Especially in recent years in China, there are many topics talking about how caffeine is harmful to people's health, whether it is true or hearsay, but coffee still scares many friends who like it. Then low-caffeinated coffee will meet the needs of these friends.

● in the Customs Import and Export regulations of the people's Republic of China, the official customs name of decaffeinated coffee beans is: caffeinated coffee beans. Literally, we can clearly see that the processing method of decaffeinated coffee beans is to soak the raw coffee beans in liquid to remove caffeine, because caffeine is a white crystal powder that is very soluble in water. So what kind of liquid is used to remove caffeine? These are the three most commonly used processing methods in the world:

1. Reagent leaching method. This is a traditional method of caffeine leaching that appeared earlier, but the residue of the reagent, such as benzene or other harmful substances, will affect the health of drinkers.

2. Swiss water immersion method. It is to soak the raw coffee beans in higher temperature water for a period of time, and then use activated carbon to absorb caffeine, which has the greatest advantage of avoiding the residue of harmful substances or heavy metals in the reagent, so that drinkers can drink safely.

3. Carbon dioxide leaching. This is one of the latest and expensive leaching methods. Gaseous carbon dioxide will become liquid at more than 300 times atmospheric pressure. Using this liquid carbon dioxide to remove caffeine from raw coffee beans can remove caffeine content to the maximum extent and maintain the taste. However, due to the high cost of processing, this kind of low-caffeinated coffee is expensive on the market and is rarely available in China.

● compared three caffeine treatments: Swiss water extraction is the healthiest and moderately priced low-caffeine bean.

Low-caffeinated coffee beans, because they remove caffeine in the process of soaking, and also need to be steamed, boiled, high-temperature water immersion and other pretreatment processes before soaking, so it has a certain impact on the taste of coffee. Most low-caffeinated coffee has some characteristics similar to roast meat or baked butter, acidity is basically undetectable, but if the roaster is skilled. It can still bake a rich, sweet, decaffeinated coffee. At the current level of processing, the flavor of decaffeinated coffee is still in a state where you can't have both fish and bear's paw. If you are afraid of caffeine and can't bear to push away the cup of coffee at hand, I'm afraid you'll have to tolerate sacrificing some coffee flavor as a price.

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