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I'll give you a reason to drink fine coffee.

Published: 2026-08-02 Author: World Gafei

Last Updated: 2026/08/02, We all know that coffee not only has a beneficial effect on the body, but also makes people feel uncomfortable. Everyone has drunk coffee that is so bitter that it is hard to swallow, and they even feel sick to their stomach, or have a sore throat, so they have to drink water desperately to try to dissolve their uncomfortable feelings. But when the intake is normal, most people can still enjoy it.

We all know that coffee has beneficial effects on the body and can also cause some uncomfortable reactions. Everyone had drunk coffee that was bitter to the point of being unable to swallow, and even felt sick after drinking it, or had a sour throat feeling, so they had to drink water desperately to try to resolve the uncomfortable feelings. However, most people can still enjoy coffee in normal consumption.

So what does this have to do with fine coffee? I tell you, bad coffee is the culprit of these adverse reactions! Below is a detailed explanation for you!

The culprit of this sad phenomenon is actually bad coffee beans. Coffee beans must go through the process of picking beans, defective bad beans, impurities screened out, before they can be sent to baking, and whether the picking beans are fine and accurate, not only related to the flavor of coffee brewing, but also may affect health.

Defective coffee beans in black beans, fungi beans, moth beans may contain toxins, of which the biggest hidden danger is non-brown aspergillosis toxin. It is a secondary metabolite produced by microorganisms and is a natural bacterial toxin. It is divided into four types: A\B\C\D, among which the toxicity of brown aspergillosis toxin A is the strongest. According to literature reports, brown aspergillosis toxin may cause liver and kidney disease, may also cause fetal malformation, immune system disease, toxicity is very strong.

With the increasing popularity of coffee knowledge, people's requirements for coffee are getting higher and higher, and such garbage beans are becoming less and less. However, there were many very low-cost coffee beans on the domestic market, the kind that cost dozens of yuan a big bag. There was no guarantee that they really contained toxins.

Because of the toxin crisis and poor taste, more and more independent cafes emphasize hand-picked beans, eliminating defective beans that affect coffee flavor and people's health. Not only for the tongue, but also for the health of consumers. Everyone can check more for their own health and safety. The key is to pick out the coffee beans with missing corners and feel that they are not beautiful. The beautiful coffee beans will be very good to drink and safer. Although coffee beans become darker after roasting, it is difficult to distinguish mold spots on the surface, but the whole and smooth full coffee beans are always safer.

Just like a sommelier, a coffee cup tester must understand the sensory characteristics of various coffees, even if there are only two defective beans in a cup of coffee. Of course, not everyone has a cup tester to drink a good ability, so we should pay attention to drink less cheap coffee outside, it is best to buy better quality coffee, or mature guaranteed coffee brand.

Source: Bonavita in China

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。