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Home / Brewing Guides/ Caffeine content of coffee beans | Why does drinking coffee make you feel refreshed? What kind of coffee is the most refreshing? How much caffeine is in a cup of black coffee? What is your daily caffeine intake?

Caffeine content of coffee beans | Why does drinking coffee make you feel refreshed? What kind of coffee is the most refreshing? How much caffeine is in a cup of black coffee? What is your daily caffeine intake?

2026.10.20 FrontStreet Coffee 570

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The original function of coffee is to refresh your mind. Whether it is espresso that you drink right away, American drip coffee that is always available in the office, or even ​Pour over​(V60) single-origin coffee that is specially made from coffee beans, it all has the function of refreshing you. It's just that everyone chooses the right coffee based on different requirements for scenes, functions, and taste.



So, with so many types of coffee, which coffee is the most refreshing?



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Why does drinking coffee make you feel refreshed?
The refreshing effect of coffee mainly comes from caffeine. The reason why we feel tired is because our body is controlled by a substance called adenosine. The longer we are awake, the more adenosine will accumulate in our body, making us more likely to feel sleepy. The substance caffeine can block the combination of adenosine and brain nerves, so the brain does not receive the "fatigue message from adenosine", so it continues to work hard, so that people do not feel tired (translation means that you use caffeine to deceive your brain).

So the most refreshing coffee is definitely the one with more caffeine. The caffeine content in the final coffee mainly depends on the caffeine content of the coffee beans and the way the coffee is made. Therefore, Front Street will discuss it in these two steps.



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Caffeine content of coffee beans
Different types of coffee beans have different caffeine content. Among our common coffees, they are mainly divided into Robusta and Arabica. Robusta (Robusa) has a higher caffeine content, accounting for about 2-4% of its own bean weight (mostly concentrated at about 3%). Although Arabica is subdivided into many varieties in specialty coffee, in terms of caffeine, they are all between 0.9-1.4% (mostly concentrated at about 1.2%).

Therefore, if you want to get more caffeine, you should choose Luo beans, and if you don’t want to consume too much caffeine, choose Arabica coffee beans. Some friends have also heard of natural decaffeinated coffee. Let me briefly explain here. Natural decaffeinated coffee also belongs to the Arabica species. The caffeine is 1/2 of ordinary Arabica, about 0.6%. For some friends who are caffeine intolerant, it is still relatively high. If you want to drink coffee but don’t want to consume caffeine, you can choose artificial decaf coffee, which contains almost no caffeine.



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Caffeine content of various extraction methods

The caffeine content on drinks is usually labeled as "Xmg/100ml". Mainly based on capacity, but from a barista's perspective, it would be more appropriate to use 1 cup or the actual amount of coffee powder used as the unit of measurement. Take espresso as an example. Whether you are making latte or Americano, as long as the same amount of espresso is used as the base, their caffeine content is the same.



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Or, add 1 shot of espresso to a cup of 200ml water and a cup of 300ml water respectively. If calculated as Xmg/100ml, the caffeine concentration of the 200ml cup will be higher than that of the 300ml cup. However, as long as everyone drinks them all, the caffeine content consumed is actually the same.

The amount of caffeine released is also related to time. Under the same high-temperature extraction, the caffeine content will be higher if the extraction time is longer. Therefore, coffee drinks based on espresso do not have the highest caffeine. Drip coffee based on hand brewing and immersion coffee based on French press have higher caffeine content. Although cold brew and ice-drip coffee are extracted at low temperature, the long extraction time makes the caffeine content higher than the previous ones.



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Below are some common caffeine content references for coffee drinks: (Note: The coffee beans are all Arabica; cold brew and ice-drip coffee are affected by the extraction time. Here, 8 hours for ice-drip and 12 hours for cold brew shall prevail)


Espresso (20g powder/40g coffee) about 100mg;
Latte, Americano, cappuccino, etc. have the same caffeine content as espresso
Hand-brewed coffee (15g powder/195ml coffee) is about 90mg;

Hand-brewed coffee (20g powder/260ml coffee) is about 120mg;


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French press (20g powder/4 minutes) about 135mg;
Ice drip coffee (a cup of 20g powder/200ml coffee) is about 135mg;
Cold brew coffee (a cup of 20g powder/200ml coffee) is about 140mg;
Hanging ear coffee (one bag of 10g powder/120ml coffee) is about 50mg;

Instant coffee (one bag) is about 50mg.


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In fact, sometimes you don’t necessarily have to drink coffee to be refreshing. After verification by Front Street Editorial Department, the refreshing effect of coffee drunk by a computer is faster and stronger than drinking it by yourself. If you don’t believe it, you can try it.



You can now buy the above coffee beans online at the Taobao store “FrontStreet Coffee” (前街咖啡). FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou, China, and its Guangzhou retail shop sells coffee beans only. The shop carries dozens of coffee beans from different origins around the world, including carefully selected single-origin beans for V60 pour-over and espresso. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers.

The FrontStreet 2013 Yunnan coffee beans sold in the store come from the Typica variety grown at FrontStreet Coffee’s own plantation in Yunnan. The name comes from the year the brand and the plantation were founded. You can buy these beans from China’s Yunnan origin at the Guangzhou shop and at FrontStreet’s Taobao store.

FrontStreet coffee beans are freshly roasted within 5 days and deliver consistently excellent quality and great value. Orders placed before 17:00 are shipped the same day, and most areas within Guangdong Province receive them the next day.

FrontStreet Coffee Taobao store: https://qianjiecoffee.taobao.com
Or search for “前街咖啡” (FrontStreet Coffee) on Taobao
Important Notice: FrontStreet Coffee has moved to a new address: 315, Donghua East Road, Guangzhou (coffee beans only)
Tel: 020 38364473

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