Which coffee roasting degree is refreshing? Relationship between roasting degree and caffeine content of coffee

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Coffee is almost an indispensable companion for modern people in the morning, and without caffeine, the body doesn't seem to be in waking mode. But which kind of coffee bean has more caffeine? Let's take a look at the Tasting Table report.

Anyone, whether it's going through a sleepless night, or being so mentally deficient that he wants to go back to sleep, knows how to drink that too strong black coffee, the whole process from the stomach to the brain. Intuitively, there's more caffeine in deep-roasted coffee, right?

This is a long-debated issue in the coffee industry. While many people believe that deep-roasted coffee is full-bodied, of course because there is more caffeine, another school believes that light roasting is a better choice when you need a lot of caffeine to wake up. Believe it, however, both sides are wrong.

In fact, every coffee bean has the same caffeine content, whether it's deep roasted or light roasted.

So why is there a long-standing rumor that light-roasted coffee has the ability to retain caffeine?

Proponents of light-roasted coffee believe that the longer the beans are roasted, the more caffeine volatilizes in the beans, but in fact, the longer the beans are roasted, the more caffeine is lost.

Coffee beans also swell slightly during roasting, making deep-roasted coffee beans larger and lighter than shallow roasting. The conclusion is that the same amount of coffee drunk every morning contains more shallow roasted beans, so the coffee is relatively strong. However, according to the experience of many professional bakers, a little more is really negligible.

What is the most important inspiration of this story? To get to the root of the problem, get some sleep.

After asking the founder of the coffee shop step by step, Ah Xian said that caffeine in coffee beans does not start to volatilize until it reaches more than 600 degrees, but whether it is deep roasting or light roasting, the maximum roasting process is only about 220 degrees. Water or other substances are volatilized. From this point of view, the caffeine content of the two kinds of coffee beans is the same. However, in the process of making coffee, shallow roasted coffee beans have more water content, so making coffee of the same capacity requires less coffee beans, natural caffeine will be lower, and many light roasted coffee beans choose better quality coffee beans. These coffee beans from high altitude areas also contain less caffeine. This may be one of the reasons why many people think that deep-roasted coffee has a better refreshing effect when it comes to coffee.